81687900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^2\times {\mathrm{5557}}^1$

素因数の和:5588

約数の個数: 108

約数和(自身を含む): 274987608

約数和(自身を除く): 193299708

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 49, 50, 60, 70, 75, 84, 98, 100, 105, 140, 147, 150, 175, 196, 210, 245, 294, 300, 350, 420, 490, 525, 588, 700, 735, 980, 1050, 1225, 1470, 2100, 2450, 2940, 3675, 4900, 5557, 7350, 11114, 14700, 16671, 22228, 27785, 33342, 38899, 55570, 66684, 77798, 83355, 111140, 116697, 138925, 155596, 166710, 194495, 233394, 272293, 277850, 333420, 388990, 416775, 466788, 544586, 555700, 583485, 777980, 816879, 833550, 972475, 1089172, 1166970, 1361465, 1633758, 1667100, 1944950, 2333940, 2722930, 2917425, 3267516, 3889900, 4084395, 5445860, 5834850, 6807325, 8168790, 11669700, 13614650, 16337580, 20421975, 27229300, 40843950, 81687900]

約数ペア:

[(1, 81687900), (2, 40843950), (3, 27229300), (4, 20421975), (5, 16337580), (6, 13614650), (7, 11669700), (10, 8168790), (12, 6807325), (14, 5834850), (15, 5445860), (20, 4084395), (21, 3889900), (25, 3267516), (28, 2917425), (30, 2722930), (35, 2333940), (42, 1944950), (49, 1667100), (50, 1633758), (60, 1361465), (70, 1166970), (75, 1089172), (84, 972475), (98, 833550), (100, 816879), (105, 777980), (140, 583485), (147, 555700), (150, 544586), (175, 466788), (196, 416775), (210, 388990), (245, 333420), (294, 277850), (300, 272293), (350, 233394), (420, 194495), (490, 166710), (525, 155596), (588, 138925), (700, 116697), (735, 111140), (980, 83355), (1050, 77798), (1225, 66684), (1470, 55570), (2100, 38899), (2450, 33342), (2940, 27785), (3675, 22228), (4900, 16671), (5557, 14700), (7350, 11114)]