21569800

素因数分解:

$2^3\times 5^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:132

約数の個数: 144

約数和(自身を含む): 61067520

約数和(自身を除く): 39497720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 31, 35, 40, 49, 50, 56, 62, 70, 71, 98, 100, 124, 140, 142, 155, 175, 196, 200, 217, 245, 248, 280, 284, 310, 350, 355, 392, 434, 490, 497, 568, 620, 700, 710, 775, 868, 980, 994, 1085, 1225, 1240, 1400, 1420, 1519, 1550, 1736, 1775, 1960, 1988, 2170, 2201, 2450, 2485, 2840, 3038, 3100, 3479, 3550, 3976, 4340, 4402, 4900, 4970, 5425, 6076, 6200, 6958, 7100, 7595, 8680, 8804, 9800, 9940, 10850, 11005, 12152, 12425, 13916, 14200, 15190, 15407, 17395, 17608, 19880, 21700, 22010, 24850, 27832, 30380, 30814, 34790, 37975, 43400, 44020, 49700, 55025, 60760, 61628, 69580, 75950, 77035, 86975, 88040, 99400, 107849, 110050, 123256, 139160, 151900, 154070, 173950, 215698, 220100, 303800, 308140, 347900, 385175, 431396, 440200, 539245, 616280, 695800, 770350, 862792, 1078490, 1540700, 2156980, 2696225, 3081400, 4313960, 5392450, 10784900, 21569800]

約数ペア:

[(1, 21569800), (2, 10784900), (4, 5392450), (5, 4313960), (7, 3081400), (8, 2696225), (10, 2156980), (14, 1540700), (20, 1078490), (25, 862792), (28, 770350), (31, 695800), (35, 616280), (40, 539245), (49, 440200), (50, 431396), (56, 385175), (62, 347900), (70, 308140), (71, 303800), (98, 220100), (100, 215698), (124, 173950), (140, 154070), (142, 151900), (155, 139160), (175, 123256), (196, 110050), (200, 107849), (217, 99400), (245, 88040), (248, 86975), (280, 77035), (284, 75950), (310, 69580), (350, 61628), (355, 60760), (392, 55025), (434, 49700), (490, 44020), (497, 43400), (568, 37975), (620, 34790), (700, 30814), (710, 30380), (775, 27832), (868, 24850), (980, 22010), (994, 21700), (1085, 19880), (1225, 17608), (1240, 17395), (1400, 15407), (1420, 15190), (1519, 14200), (1550, 13916), (1736, 12425), (1775, 12152), (1960, 11005), (1988, 10850), (2170, 9940), (2201, 9800), (2450, 8804), (2485, 8680), (2840, 7595), (3038, 7100), (3100, 6958), (3479, 6200), (3550, 6076), (3976, 5425), (4340, 4970), (4402, 4900)]