51407920

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1091}}^1$

素因数の和:1154

約数の個数: 80

約数和(自身を含む): 129991680

約数和(自身を除く): 78583760

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 38, 40, 62, 76, 80, 95, 124, 152, 155, 190, 248, 304, 310, 380, 496, 589, 620, 760, 1091, 1178, 1240, 1520, 2182, 2356, 2480, 2945, 4364, 4712, 5455, 5890, 8728, 9424, 10910, 11780, 17456, 20729, 21820, 23560, 33821, 41458, 43640, 47120, 67642, 82916, 87280, 103645, 135284, 165832, 169105, 207290, 270568, 331664, 338210, 414580, 541136, 642599, 676420, 829160, 1285198, 1352840, 1658320, 2570396, 2705680, 3212995, 5140792, 6425990, 10281584, 12851980, 25703960, 51407920]

約数ペア:

[(1, 51407920), (2, 25703960), (4, 12851980), (5, 10281584), (8, 6425990), (10, 5140792), (16, 3212995), (19, 2705680), (20, 2570396), (31, 1658320), (38, 1352840), (40, 1285198), (62, 829160), (76, 676420), (80, 642599), (95, 541136), (124, 414580), (152, 338210), (155, 331664), (190, 270568), (248, 207290), (304, 169105), (310, 165832), (380, 135284), (496, 103645), (589, 87280), (620, 82916), (760, 67642), (1091, 47120), (1178, 43640), (1240, 41458), (1520, 33821), (2182, 23560), (2356, 21820), (2480, 20729), (2945, 17456), (4364, 11780), (4712, 10910), (5455, 9424), (5890, 8728)]