20862440

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{12721}}^1$

素因数の和:12773

約数の個数: 32

約数和(自身を含む): 48089160

約数和(自身を除く): 27226720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 12721, 25442, 50884, 63605, 101768, 127210, 254420, 508840, 521561, 1043122, 2086244, 2607805, 4172488, 5215610, 10431220, 20862440]

約数ペア:

[(1, 20862440), (2, 10431220), (4, 5215610), (5, 4172488), (8, 2607805), (10, 2086244), (20, 1043122), (40, 521561), (41, 508840), (82, 254420), (164, 127210), (205, 101768), (328, 63605), (410, 50884), (820, 25442), (1640, 12721)]