21998640

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1291}}^1$

素因数の和:1378

約数の個数: 80

約数和(自身を含む): 69209856

約数和(自身を除く): 47211216

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 71, 80, 120, 142, 213, 240, 284, 355, 426, 568, 710, 852, 1065, 1136, 1291, 1420, 1704, 2130, 2582, 2840, 3408, 3873, 4260, 5164, 5680, 6455, 7746, 8520, 10328, 12910, 15492, 17040, 19365, 20656, 25820, 30984, 38730, 51640, 61968, 77460, 91661, 103280, 154920, 183322, 274983, 309840, 366644, 458305, 549966, 733288, 916610, 1099932, 1374915, 1466576, 1833220, 2199864, 2749830, 3666440, 4399728, 5499660, 7332880, 10999320, 21998640]

約数ペア:

[(1, 21998640), (2, 10999320), (3, 7332880), (4, 5499660), (5, 4399728), (6, 3666440), (8, 2749830), (10, 2199864), (12, 1833220), (15, 1466576), (16, 1374915), (20, 1099932), (24, 916610), (30, 733288), (40, 549966), (48, 458305), (60, 366644), (71, 309840), (80, 274983), (120, 183322), (142, 154920), (213, 103280), (240, 91661), (284, 77460), (355, 61968), (426, 51640), (568, 38730), (710, 30984), (852, 25820), (1065, 20656), (1136, 19365), (1291, 17040), (1420, 15492), (1704, 12910), (2130, 10328), (2582, 8520), (2840, 7746), (3408, 6455), (3873, 5680), (4260, 5164)]