40782920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{181}}^1$

素因数の和:366

約数の個数: 64

約数和(自身を含む): 95135040

約数和(自身を除く): 54352120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 131, 172, 181, 215, 262, 344, 362, 430, 524, 655, 724, 860, 905, 1048, 1310, 1448, 1720, 1810, 2620, 3620, 5240, 5633, 7240, 7783, 11266, 15566, 22532, 23711, 28165, 31132, 38915, 45064, 47422, 56330, 62264, 77830, 94844, 112660, 118555, 155660, 189688, 225320, 237110, 311320, 474220, 948440, 1019573, 2039146, 4078292, 5097865, 8156584, 10195730, 20391460, 40782920]

約数ペア:

[(1, 40782920), (2, 20391460), (4, 10195730), (5, 8156584), (8, 5097865), (10, 4078292), (20, 2039146), (40, 1019573), (43, 948440), (86, 474220), (131, 311320), (172, 237110), (181, 225320), (215, 189688), (262, 155660), (344, 118555), (362, 112660), (430, 94844), (524, 77830), (655, 62264), (724, 56330), (860, 47422), (905, 45064), (1048, 38915), (1310, 31132), (1448, 28165), (1720, 23711), (1810, 22532), (2620, 15566), (3620, 11266), (5240, 7783), (5633, 7240)]