20782960

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{113}}^1$

素因数の和:167

約数の個数: 120

約数和(自身を含む): 56402640

約数和(自身を除く): 35619680

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 38, 40, 44, 55, 76, 80, 88, 95, 110, 113, 121, 152, 176, 190, 209, 220, 226, 242, 304, 380, 418, 440, 452, 484, 565, 605, 760, 836, 880, 904, 968, 1045, 1130, 1210, 1243, 1520, 1672, 1808, 1936, 2090, 2147, 2260, 2299, 2420, 2486, 3344, 4180, 4294, 4520, 4598, 4840, 4972, 6215, 8360, 8588, 9040, 9196, 9680, 9944, 10735, 11495, 12430, 13673, 16720, 17176, 18392, 19888, 21470, 22990, 23617, 24860, 27346, 34352, 36784, 42940, 45980, 47234, 49720, 54692, 68365, 85880, 91960, 94468, 99440, 109384, 118085, 136730, 171760, 183920, 188936, 218768, 236170, 259787, 273460, 377872, 472340, 519574, 546920, 944680, 1039148, 1093840, 1298935, 1889360, 2078296, 2597870, 4156592, 5195740, 10391480, 20782960]

約数ペア:

[(1, 20782960), (2, 10391480), (4, 5195740), (5, 4156592), (8, 2597870), (10, 2078296), (11, 1889360), (16, 1298935), (19, 1093840), (20, 1039148), (22, 944680), (38, 546920), (40, 519574), (44, 472340), (55, 377872), (76, 273460), (80, 259787), (88, 236170), (95, 218768), (110, 188936), (113, 183920), (121, 171760), (152, 136730), (176, 118085), (190, 109384), (209, 99440), (220, 94468), (226, 91960), (242, 85880), (304, 68365), (380, 54692), (418, 49720), (440, 47234), (452, 45980), (484, 42940), (565, 36784), (605, 34352), (760, 27346), (836, 24860), (880, 23617), (904, 22990), (968, 21470), (1045, 19888), (1130, 18392), (1210, 17176), (1243, 16720), (1520, 13673), (1672, 12430), (1808, 11495), (1936, 10735), (2090, 9944), (2147, 9680), (2260, 9196), (2299, 9040), (2420, 8588), (2486, 8360), (3344, 6215), (4180, 4972), (4294, 4840), (4520, 4598)]