20319780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{239}}^1$

素因数の和:373

約数の個数: 96

約数和(自身を含む): 62092800

約数和(自身を除く): 41773020

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 109, 130, 156, 195, 218, 239, 260, 327, 390, 436, 478, 545, 654, 717, 780, 956, 1090, 1195, 1308, 1417, 1434, 1635, 2180, 2390, 2834, 2868, 3107, 3270, 3585, 4251, 4780, 5668, 6214, 6540, 7085, 7170, 8502, 9321, 12428, 14170, 14340, 15535, 17004, 18642, 21255, 26051, 28340, 31070, 37284, 42510, 46605, 52102, 62140, 78153, 85020, 93210, 104204, 130255, 156306, 186420, 260510, 312612, 338663, 390765, 521020, 677326, 781530, 1015989, 1354652, 1563060, 1693315, 2031978, 3386630, 4063956, 5079945, 6773260, 10159890, 20319780]

約数ペア:

[(1, 20319780), (2, 10159890), (3, 6773260), (4, 5079945), (5, 4063956), (6, 3386630), (10, 2031978), (12, 1693315), (13, 1563060), (15, 1354652), (20, 1015989), (26, 781530), (30, 677326), (39, 521020), (52, 390765), (60, 338663), (65, 312612), (78, 260510), (109, 186420), (130, 156306), (156, 130255), (195, 104204), (218, 93210), (239, 85020), (260, 78153), (327, 62140), (390, 52102), (436, 46605), (478, 42510), (545, 37284), (654, 31070), (717, 28340), (780, 26051), (956, 21255), (1090, 18642), (1195, 17004), (1308, 15535), (1417, 14340), (1434, 14170), (1635, 12428), (2180, 9321), (2390, 8502), (2834, 7170), (2868, 7085), (3107, 6540), (3270, 6214), (3585, 5668), (4251, 4780)]