20639700

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1$

素因数の和:127

約数の個数: 216

約数和(自身を含む): 73120320

約数和(自身を除く): 52480620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 19, 20, 25, 30, 34, 36, 38, 45, 50, 51, 57, 60, 68, 71, 75, 76, 85, 90, 95, 100, 102, 114, 142, 150, 153, 170, 171, 180, 190, 204, 213, 225, 228, 255, 284, 285, 300, 306, 323, 340, 342, 355, 380, 425, 426, 450, 475, 510, 570, 612, 639, 646, 684, 710, 765, 850, 852, 855, 900, 950, 969, 1020, 1065, 1140, 1207, 1275, 1278, 1292, 1349, 1420, 1425, 1530, 1615, 1700, 1710, 1775, 1900, 1938, 2130, 2414, 2550, 2556, 2698, 2850, 2907, 3060, 3195, 3230, 3420, 3550, 3621, 3825, 3876, 4047, 4260, 4275, 4828, 4845, 5100, 5325, 5396, 5700, 5814, 6035, 6390, 6460, 6745, 7100, 7242, 7650, 8075, 8094, 8550, 9690, 10650, 10863, 11628, 12070, 12141, 12780, 13490, 14484, 14535, 15300, 15975, 16150, 16188, 17100, 18105, 19380, 20235, 21300, 21726, 22933, 24140, 24225, 24282, 26980, 29070, 30175, 31950, 32300, 33725, 36210, 40470, 43452, 45866, 48450, 48564, 54315, 58140, 60350, 60705, 63900, 67450, 68799, 72420, 72675, 80940, 90525, 91732, 96900, 101175, 108630, 114665, 120700, 121410, 134900, 137598, 145350, 181050, 202350, 206397, 217260, 229330, 242820, 271575, 275196, 290700, 303525, 343995, 362100, 404700, 412794, 458660, 543150, 573325, 607050, 687990, 825588, 1031985, 1086300, 1146650, 1214100, 1375980, 1719975, 2063970, 2293300, 3439950, 4127940, 5159925, 6879900, 10319850, 20639700]

約数ペア:

[(1, 20639700), (2, 10319850), (3, 6879900), (4, 5159925), (5, 4127940), (6, 3439950), (9, 2293300), (10, 2063970), (12, 1719975), (15, 1375980), (17, 1214100), (18, 1146650), (19, 1086300), (20, 1031985), (25, 825588), (30, 687990), (34, 607050), (36, 573325), (38, 543150), (45, 458660), (50, 412794), (51, 404700), (57, 362100), (60, 343995), (68, 303525), (71, 290700), (75, 275196), (76, 271575), (85, 242820), (90, 229330), (95, 217260), (100, 206397), (102, 202350), (114, 181050), (142, 145350), (150, 137598), (153, 134900), (170, 121410), (171, 120700), (180, 114665), (190, 108630), (204, 101175), (213, 96900), (225, 91732), (228, 90525), (255, 80940), (284, 72675), (285, 72420), (300, 68799), (306, 67450), (323, 63900), (340, 60705), (342, 60350), (355, 58140), (380, 54315), (425, 48564), (426, 48450), (450, 45866), (475, 43452), (510, 40470), (570, 36210), (612, 33725), (639, 32300), (646, 31950), (684, 30175), (710, 29070), (765, 26980), (850, 24282), (852, 24225), (855, 24140), (900, 22933), (950, 21726), (969, 21300), (1020, 20235), (1065, 19380), (1140, 18105), (1207, 17100), (1275, 16188), (1278, 16150), (1292, 15975), (1349, 15300), (1420, 14535), (1425, 14484), (1530, 13490), (1615, 12780), (1700, 12141), (1710, 12070), (1775, 11628), (1900, 10863), (1938, 10650), (2130, 9690), (2414, 8550), (2550, 8094), (2556, 8075), (2698, 7650), (2850, 7242), (2907, 7100), (3060, 6745), (3195, 6460), (3230, 6390), (3420, 6035), (3550, 5814), (3621, 5700), (3825, 5396), (3876, 5325), (4047, 5100), (4260, 4845), (4275, 4828)]