31041320

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{239}}^1$

素因数の和:458

約数の個数: 64

約数和(自身を含む): 74649600

約数和(自身を除く): 43608280

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 191, 239, 340, 382, 478, 680, 764, 955, 956, 1195, 1528, 1910, 1912, 2390, 3247, 3820, 4063, 4780, 6494, 7640, 8126, 9560, 12988, 16235, 16252, 20315, 25976, 32470, 32504, 40630, 45649, 64940, 81260, 91298, 129880, 162520, 182596, 228245, 365192, 456490, 776033, 912980, 1552066, 1825960, 3104132, 3880165, 6208264, 7760330, 15520660, 31041320]

約数ペア:

[(1, 31041320), (2, 15520660), (4, 7760330), (5, 6208264), (8, 3880165), (10, 3104132), (17, 1825960), (20, 1552066), (34, 912980), (40, 776033), (68, 456490), (85, 365192), (136, 228245), (170, 182596), (191, 162520), (239, 129880), (340, 91298), (382, 81260), (478, 64940), (680, 45649), (764, 40630), (955, 32504), (956, 32470), (1195, 25976), (1528, 20315), (1910, 16252), (1912, 16235), (2390, 12988), (3247, 9560), (3820, 8126), (4063, 7640), (4780, 6494)]