72443720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{163}}^1\times {\mathrm{271}}^1$

素因数の和:486

約数の個数: 64

約数和(自身を含む): 168618240

約数和(自身を除く): 96174520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 163, 164, 205, 271, 326, 328, 410, 542, 652, 815, 820, 1084, 1304, 1355, 1630, 1640, 2168, 2710, 3260, 5420, 6520, 6683, 10840, 11111, 13366, 22222, 26732, 33415, 44173, 44444, 53464, 55555, 66830, 88346, 88888, 111110, 133660, 176692, 220865, 222220, 267320, 353384, 441730, 444440, 883460, 1766920, 1811093, 3622186, 7244372, 9055465, 14488744, 18110930, 36221860, 72443720]

約数ペア:

[(1, 72443720), (2, 36221860), (4, 18110930), (5, 14488744), (8, 9055465), (10, 7244372), (20, 3622186), (40, 1811093), (41, 1766920), (82, 883460), (163, 444440), (164, 441730), (205, 353384), (271, 267320), (326, 222220), (328, 220865), (410, 176692), (542, 133660), (652, 111110), (815, 88888), (820, 88346), (1084, 66830), (1304, 55555), (1355, 53464), (1630, 44444), (1640, 44173), (2168, 33415), (2710, 26732), (3260, 22222), (5420, 13366), (6520, 11111), (6683, 10840)]