20798050

素因数分解:

$2^1\times 5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{653}}^1$

素因数の和:692

約数の個数: 72

約数和(自身を含む): 48535956

約数和(自身を除く): 27737906

約数列:

[1, 2, 5, 7, 10, 13, 14, 25, 26, 35, 49, 50, 65, 70, 91, 98, 130, 175, 182, 245, 325, 350, 455, 490, 637, 650, 653, 910, 1225, 1274, 1306, 2275, 2450, 3185, 3265, 4550, 4571, 6370, 6530, 8489, 9142, 15925, 16325, 16978, 22855, 31850, 31997, 32650, 42445, 45710, 59423, 63994, 84890, 114275, 118846, 159985, 212225, 228550, 297115, 319970, 415961, 424450, 594230, 799925, 831922, 1485575, 1599850, 2079805, 2971150, 4159610, 10399025, 20798050]

約数ペア:

[(1, 20798050), (2, 10399025), (5, 4159610), (7, 2971150), (10, 2079805), (13, 1599850), (14, 1485575), (25, 831922), (26, 799925), (35, 594230), (49, 424450), (50, 415961), (65, 319970), (70, 297115), (91, 228550), (98, 212225), (130, 159985), (175, 118846), (182, 114275), (245, 84890), (325, 63994), (350, 59423), (455, 45710), (490, 42445), (637, 32650), (650, 31997), (653, 31850), (910, 22855), (1225, 16978), (1274, 16325), (1306, 15925), (2275, 9142), (2450, 8489), (3185, 6530), (3265, 6370), (4550, 4571)]