86641900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1471}}^1$

素因数の和:1535

約数の個数: 72

約数和(自身を含む): 204431360

約数和(自身を除く): 117789460

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 31, 38, 50, 62, 76, 95, 100, 124, 155, 190, 310, 380, 475, 589, 620, 775, 950, 1178, 1471, 1550, 1900, 2356, 2942, 2945, 3100, 5884, 5890, 7355, 11780, 14710, 14725, 27949, 29420, 29450, 36775, 45601, 55898, 58900, 73550, 91202, 111796, 139745, 147100, 182404, 228005, 279490, 456010, 558980, 698725, 866419, 912020, 1140025, 1397450, 1732838, 2280050, 2794900, 3465676, 4332095, 4560100, 8664190, 17328380, 21660475, 43320950, 86641900]

約数ペア:

[(1, 86641900), (2, 43320950), (4, 21660475), (5, 17328380), (10, 8664190), (19, 4560100), (20, 4332095), (25, 3465676), (31, 2794900), (38, 2280050), (50, 1732838), (62, 1397450), (76, 1140025), (95, 912020), (100, 866419), (124, 698725), (155, 558980), (190, 456010), (310, 279490), (380, 228005), (475, 182404), (589, 147100), (620, 139745), (775, 111796), (950, 91202), (1178, 73550), (1471, 58900), (1550, 55898), (1900, 45601), (2356, 36775), (2942, 29450), (2945, 29420), (3100, 27949), (5884, 14725), (5890, 14710), (7355, 11780)]