13065880

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{257}}^1$

素因数の和:340

約数の個数: 64

約数和(自身を含む): 31207680

約数和(自身を除く): 18141800

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 41, 62, 82, 124, 155, 164, 205, 248, 257, 310, 328, 410, 514, 620, 820, 1028, 1240, 1271, 1285, 1640, 2056, 2542, 2570, 5084, 5140, 6355, 7967, 10168, 10280, 10537, 12710, 15934, 21074, 25420, 31868, 39835, 42148, 50840, 52685, 63736, 79670, 84296, 105370, 159340, 210740, 318680, 326647, 421480, 653294, 1306588, 1633235, 2613176, 3266470, 6532940, 13065880]

約数ペア:

[(1, 13065880), (2, 6532940), (4, 3266470), (5, 2613176), (8, 1633235), (10, 1306588), (20, 653294), (31, 421480), (40, 326647), (41, 318680), (62, 210740), (82, 159340), (124, 105370), (155, 84296), (164, 79670), (205, 63736), (248, 52685), (257, 50840), (310, 42148), (328, 39835), (410, 31868), (514, 25420), (620, 21074), (820, 15934), (1028, 12710), (1240, 10537), (1271, 10280), (1285, 10168), (1640, 7967), (2056, 6355), (2542, 5140), (2570, 5084)]