20118919120

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{307817}}^1$

素因数の和:307892

約数の個数: 80

約数和(自身を含む): 50383650240

約数和(自身を除く): 30264731120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 43, 76, 80, 86, 95, 152, 172, 190, 215, 304, 344, 380, 430, 688, 760, 817, 860, 1520, 1634, 1720, 3268, 3440, 4085, 6536, 8170, 13072, 16340, 32680, 65360, 307817, 615634, 1231268, 1539085, 2462536, 3078170, 4925072, 5848523, 6156340, 11697046, 12312680, 13236131, 23394092, 24625360, 26472262, 29242615, 46788184, 52944524, 58485230, 66180655, 93576368, 105889048, 116970460, 132361310, 211778096, 233940920, 251486489, 264722620, 467881840, 502972978, 529445240, 1005945956, 1058890480, 1257432445, 2011891912, 2514864890, 4023783824, 5029729780, 10059459560, 20118919120]

約数ペア:

[(1, 20118919120), (2, 10059459560), (4, 5029729780), (5, 4023783824), (8, 2514864890), (10, 2011891912), (16, 1257432445), (19, 1058890480), (20, 1005945956), (38, 529445240), (40, 502972978), (43, 467881840), (76, 264722620), (80, 251486489), (86, 233940920), (95, 211778096), (152, 132361310), (172, 116970460), (190, 105889048), (215, 93576368), (304, 66180655), (344, 58485230), (380, 52944524), (430, 46788184), (688, 29242615), (760, 26472262), (817, 24625360), (860, 23394092), (1520, 13236131), (1634, 12312680), (1720, 11697046), (3268, 6156340), (3440, 5848523), (4085, 4925072), (6536, 3078170), (8170, 2462536), (13072, 1539085), (16340, 1231268), (32680, 615634), (65360, 307817)]