21539700

素因数分解:

$2^2\times 3^2\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{263}}^1$

素因数の和:303

約数の個数: 216

約数和(自身を含む): 83411328

約数和(自身を除く): 61871628

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 25, 26, 28, 30, 35, 36, 39, 42, 45, 50, 52, 60, 63, 65, 70, 75, 78, 84, 90, 91, 100, 105, 117, 126, 130, 140, 150, 156, 175, 180, 182, 195, 210, 225, 234, 252, 260, 263, 273, 300, 315, 325, 350, 364, 390, 420, 450, 455, 468, 525, 526, 546, 585, 630, 650, 700, 780, 789, 819, 900, 910, 975, 1050, 1052, 1092, 1170, 1260, 1300, 1315, 1365, 1575, 1578, 1638, 1820, 1841, 1950, 2100, 2275, 2340, 2367, 2630, 2730, 2925, 3150, 3156, 3276, 3419, 3682, 3900, 3945, 4095, 4550, 4734, 5260, 5460, 5523, 5850, 6300, 6575, 6825, 6838, 7364, 7890, 8190, 9100, 9205, 9468, 10257, 11046, 11700, 11835, 13150, 13650, 13676, 15780, 16380, 16569, 17095, 18410, 19725, 20475, 20514, 22092, 23670, 23933, 26300, 27300, 27615, 30771, 33138, 34190, 36820, 39450, 40950, 41028, 46025, 47340, 47866, 51285, 55230, 59175, 61542, 66276, 68380, 71799, 78900, 81900, 82845, 85475, 92050, 95732, 102570, 110460, 118350, 119665, 123084, 138075, 143598, 153855, 165690, 170950, 184100, 205140, 215397, 236700, 239330, 256425, 276150, 287196, 307710, 331380, 341900, 358995, 414225, 430794, 478660, 512850, 552300, 598325, 615420, 717990, 769275, 828450, 861588, 1025700, 1076985, 1196650, 1435980, 1538550, 1656900, 1794975, 2153970, 2393300, 3077100, 3589950, 4307940, 5384925, 7179900, 10769850, 21539700]

約数ペア:

[(1, 21539700), (2, 10769850), (3, 7179900), (4, 5384925), (5, 4307940), (6, 3589950), (7, 3077100), (9, 2393300), (10, 2153970), (12, 1794975), (13, 1656900), (14, 1538550), (15, 1435980), (18, 1196650), (20, 1076985), (21, 1025700), (25, 861588), (26, 828450), (28, 769275), (30, 717990), (35, 615420), (36, 598325), (39, 552300), (42, 512850), (45, 478660), (50, 430794), (52, 414225), (60, 358995), (63, 341900), (65, 331380), (70, 307710), (75, 287196), (78, 276150), (84, 256425), (90, 239330), (91, 236700), (100, 215397), (105, 205140), (117, 184100), (126, 170950), (130, 165690), (140, 153855), (150, 143598), (156, 138075), (175, 123084), (180, 119665), (182, 118350), (195, 110460), (210, 102570), (225, 95732), (234, 92050), (252, 85475), (260, 82845), (263, 81900), (273, 78900), (300, 71799), (315, 68380), (325, 66276), (350, 61542), (364, 59175), (390, 55230), (420, 51285), (450, 47866), (455, 47340), (468, 46025), (525, 41028), (526, 40950), (546, 39450), (585, 36820), (630, 34190), (650, 33138), (700, 30771), (780, 27615), (789, 27300), (819, 26300), (900, 23933), (910, 23670), (975, 22092), (1050, 20514), (1052, 20475), (1092, 19725), (1170, 18410), (1260, 17095), (1300, 16569), (1315, 16380), (1365, 15780), (1575, 13676), (1578, 13650), (1638, 13150), (1820, 11835), (1841, 11700), (1950, 11046), (2100, 10257), (2275, 9468), (2340, 9205), (2367, 9100), (2630, 8190), (2730, 7890), (2925, 7364), (3150, 6838), (3156, 6825), (3276, 6575), (3419, 6300), (3682, 5850), (3900, 5523), (3945, 5460), (4095, 5260), (4550, 4734)]