8999920

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{191}}^1$

素因数の和:254

約数の個数: 80

約数和(自身を含む): 22855680

約数和(自身を除く): 13855760

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 38, 40, 62, 76, 80, 95, 124, 152, 155, 190, 191, 248, 304, 310, 380, 382, 496, 589, 620, 760, 764, 955, 1178, 1240, 1520, 1528, 1910, 2356, 2480, 2945, 3056, 3629, 3820, 4712, 5890, 5921, 7258, 7640, 9424, 11780, 11842, 14516, 15280, 18145, 23560, 23684, 29032, 29605, 36290, 47120, 47368, 58064, 59210, 72580, 94736, 112499, 118420, 145160, 224998, 236840, 290320, 449996, 473680, 562495, 899992, 1124990, 1799984, 2249980, 4499960, 8999920]

約数ペア:

[(1, 8999920), (2, 4499960), (4, 2249980), (5, 1799984), (8, 1124990), (10, 899992), (16, 562495), (19, 473680), (20, 449996), (31, 290320), (38, 236840), (40, 224998), (62, 145160), (76, 118420), (80, 112499), (95, 94736), (124, 72580), (152, 59210), (155, 58064), (190, 47368), (191, 47120), (248, 36290), (304, 29605), (310, 29032), (380, 23684), (382, 23560), (496, 18145), (589, 15280), (620, 14516), (760, 11842), (764, 11780), (955, 9424), (1178, 7640), (1240, 7258), (1520, 5921), (1528, 5890), (1910, 4712), (2356, 3820), (2480, 3629), (2945, 3056)]