178848880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{521}}^1\times {\mathrm{613}}^1$

素因数の和:1154

約数の個数: 80

約数和(自身を含む): 476915904

約数和(自身を除く): 298067024

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 521, 560, 613, 1042, 1226, 2084, 2452, 2605, 3065, 3647, 4168, 4291, 4904, 5210, 6130, 7294, 8336, 8582, 9808, 10420, 12260, 14588, 17164, 18235, 20840, 21455, 24520, 29176, 34328, 36470, 41680, 42910, 49040, 58352, 68656, 72940, 85820, 145880, 171640, 291760, 319373, 343280, 638746, 1277492, 1596865, 2235611, 2554984, 3193730, 4471222, 5109968, 6387460, 8942444, 11178055, 12774920, 17884888, 22356110, 25549840, 35769776, 44712220, 89424440, 178848880]

約数ペア:

[(1, 178848880), (2, 89424440), (4, 44712220), (5, 35769776), (7, 25549840), (8, 22356110), (10, 17884888), (14, 12774920), (16, 11178055), (20, 8942444), (28, 6387460), (35, 5109968), (40, 4471222), (56, 3193730), (70, 2554984), (80, 2235611), (112, 1596865), (140, 1277492), (280, 638746), (521, 343280), (560, 319373), (613, 291760), (1042, 171640), (1226, 145880), (2084, 85820), (2452, 72940), (2605, 68656), (3065, 58352), (3647, 49040), (4168, 42910), (4291, 41680), (4904, 36470), (5210, 34328), (6130, 29176), (7294, 24520), (8336, 21455), (8582, 20840), (9808, 18235), (10420, 17164), (12260, 14588)]