20352800

素因数分解:

$2^5\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1$

素因数の和:155

約数の個数: 144

約数和(自身を含む): 56871360

約数和(自身を除く): 36518560

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 25, 26, 32, 38, 40, 50, 52, 65, 76, 80, 95, 100, 103, 104, 130, 152, 160, 190, 200, 206, 208, 247, 260, 304, 325, 380, 400, 412, 416, 475, 494, 515, 520, 608, 650, 760, 800, 824, 950, 988, 1030, 1040, 1235, 1300, 1339, 1520, 1648, 1900, 1957, 1976, 2060, 2080, 2470, 2575, 2600, 2678, 3040, 3296, 3800, 3914, 3952, 4120, 4940, 5150, 5200, 5356, 6175, 6695, 7600, 7828, 7904, 8240, 9785, 9880, 10300, 10400, 10712, 12350, 13390, 15200, 15656, 16480, 19570, 19760, 20600, 21424, 24700, 25441, 26780, 31312, 33475, 39140, 39520, 41200, 42848, 48925, 49400, 50882, 53560, 62624, 66950, 78280, 82400, 97850, 98800, 101764, 107120, 127205, 133900, 156560, 195700, 197600, 203528, 214240, 254410, 267800, 313120, 391400, 407056, 508820, 535600, 636025, 782800, 814112, 1017640, 1071200, 1272050, 1565600, 2035280, 2544100, 4070560, 5088200, 10176400, 20352800]

約数ペア:

[(1, 20352800), (2, 10176400), (4, 5088200), (5, 4070560), (8, 2544100), (10, 2035280), (13, 1565600), (16, 1272050), (19, 1071200), (20, 1017640), (25, 814112), (26, 782800), (32, 636025), (38, 535600), (40, 508820), (50, 407056), (52, 391400), (65, 313120), (76, 267800), (80, 254410), (95, 214240), (100, 203528), (103, 197600), (104, 195700), (130, 156560), (152, 133900), (160, 127205), (190, 107120), (200, 101764), (206, 98800), (208, 97850), (247, 82400), (260, 78280), (304, 66950), (325, 62624), (380, 53560), (400, 50882), (412, 49400), (416, 48925), (475, 42848), (494, 41200), (515, 39520), (520, 39140), (608, 33475), (650, 31312), (760, 26780), (800, 25441), (824, 24700), (950, 21424), (988, 20600), (1030, 19760), (1040, 19570), (1235, 16480), (1300, 15656), (1339, 15200), (1520, 13390), (1648, 12350), (1900, 10712), (1957, 10400), (1976, 10300), (2060, 9880), (2080, 9785), (2470, 8240), (2575, 7904), (2600, 7828), (2678, 7600), (3040, 6695), (3296, 6175), (3800, 5356), (3914, 5200), (3952, 5150), (4120, 4940)]