259995760

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{2557}}^1$

素因数の和:2642

約数の個数: 80

約数和(自身を含む): 639459072

約数和(自身を除く): 379463312

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 41, 62, 80, 82, 124, 155, 164, 205, 248, 310, 328, 410, 496, 620, 656, 820, 1240, 1271, 1640, 2480, 2542, 2557, 3280, 5084, 5114, 6355, 10168, 10228, 12710, 12785, 20336, 20456, 25420, 25570, 40912, 50840, 51140, 79267, 101680, 102280, 104837, 158534, 204560, 209674, 317068, 396335, 419348, 524185, 634136, 792670, 838696, 1048370, 1268272, 1585340, 1677392, 2096740, 3170680, 3249947, 4193480, 6341360, 6499894, 8386960, 12999788, 16249735, 25999576, 32499470, 51999152, 64998940, 129997880, 259995760]

約数ペア:

[(1, 259995760), (2, 129997880), (4, 64998940), (5, 51999152), (8, 32499470), (10, 25999576), (16, 16249735), (20, 12999788), (31, 8386960), (40, 6499894), (41, 6341360), (62, 4193480), (80, 3249947), (82, 3170680), (124, 2096740), (155, 1677392), (164, 1585340), (205, 1268272), (248, 1048370), (310, 838696), (328, 792670), (410, 634136), (496, 524185), (620, 419348), (656, 396335), (820, 317068), (1240, 209674), (1271, 204560), (1640, 158534), (2480, 104837), (2542, 102280), (2557, 101680), (3280, 79267), (5084, 51140), (5114, 50840), (6355, 40912), (10168, 25570), (10228, 25420), (12710, 20456), (12785, 20336)]