8778920

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1$

素因数の和:206

約数の個数: 64

約数和(自身を含む): 20820240

約数和(自身を除く): 12041320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 53, 82, 101, 106, 164, 202, 205, 212, 265, 328, 404, 410, 424, 505, 530, 808, 820, 1010, 1060, 1640, 2020, 2120, 2173, 4040, 4141, 4346, 5353, 8282, 8692, 10706, 10865, 16564, 17384, 20705, 21412, 21730, 26765, 33128, 41410, 42824, 43460, 53530, 82820, 86920, 107060, 165640, 214120, 219473, 438946, 877892, 1097365, 1755784, 2194730, 4389460, 8778920]

約数ペア:

[(1, 8778920), (2, 4389460), (4, 2194730), (5, 1755784), (8, 1097365), (10, 877892), (20, 438946), (40, 219473), (41, 214120), (53, 165640), (82, 107060), (101, 86920), (106, 82820), (164, 53530), (202, 43460), (205, 42824), (212, 41410), (265, 33128), (328, 26765), (404, 21730), (410, 21412), (424, 20705), (505, 17384), (530, 16564), (808, 10865), (820, 10706), (1010, 8692), (1060, 8282), (1640, 5353), (2020, 4346), (2120, 4141), (2173, 4040)]