20872260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{359}}^1$

素因数の和:410

約数の個数: 144

約数和(自身を含む): 70761600

約数和(自身を除く): 49889340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 19, 20, 30, 34, 36, 38, 45, 51, 57, 60, 68, 76, 85, 90, 95, 102, 114, 153, 170, 171, 180, 190, 204, 228, 255, 285, 306, 323, 340, 342, 359, 380, 510, 570, 612, 646, 684, 718, 765, 855, 969, 1020, 1077, 1140, 1292, 1436, 1530, 1615, 1710, 1795, 1938, 2154, 2907, 3060, 3230, 3231, 3420, 3590, 3876, 4308, 4845, 5385, 5814, 6103, 6460, 6462, 6821, 7180, 9690, 10770, 11628, 12206, 12924, 13642, 14535, 16155, 18309, 19380, 20463, 21540, 24412, 27284, 29070, 30515, 32310, 34105, 36618, 40926, 54927, 58140, 61030, 61389, 64620, 68210, 73236, 81852, 91545, 102315, 109854, 115957, 122060, 122778, 136420, 183090, 204630, 219708, 231914, 245556, 274635, 306945, 347871, 366180, 409260, 463828, 549270, 579785, 613890, 695742, 1043613, 1098540, 1159570, 1227780, 1391484, 1739355, 2087226, 2319140, 3478710, 4174452, 5218065, 6957420, 10436130, 20872260]

約数ペア:

[(1, 20872260), (2, 10436130), (3, 6957420), (4, 5218065), (5, 4174452), (6, 3478710), (9, 2319140), (10, 2087226), (12, 1739355), (15, 1391484), (17, 1227780), (18, 1159570), (19, 1098540), (20, 1043613), (30, 695742), (34, 613890), (36, 579785), (38, 549270), (45, 463828), (51, 409260), (57, 366180), (60, 347871), (68, 306945), (76, 274635), (85, 245556), (90, 231914), (95, 219708), (102, 204630), (114, 183090), (153, 136420), (170, 122778), (171, 122060), (180, 115957), (190, 109854), (204, 102315), (228, 91545), (255, 81852), (285, 73236), (306, 68210), (323, 64620), (340, 61389), (342, 61030), (359, 58140), (380, 54927), (510, 40926), (570, 36618), (612, 34105), (646, 32310), (684, 30515), (718, 29070), (765, 27284), (855, 24412), (969, 21540), (1020, 20463), (1077, 19380), (1140, 18309), (1292, 16155), (1436, 14535), (1530, 13642), (1615, 12924), (1710, 12206), (1795, 11628), (1938, 10770), (2154, 9690), (2907, 7180), (3060, 6821), (3230, 6462), (3231, 6460), (3420, 6103), (3590, 5814), (3876, 5385), (4308, 4845)]