398399980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{95311}}^1$

素因数の和:95350

約数の個数: 48

約数和(自身を含む): 960744960

約数和(自身を除く): 562344980

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 95311, 190622, 381244, 476555, 953110, 1048421, 1810909, 1906220, 2096842, 3621818, 4193684, 5242105, 7243636, 9054545, 10484210, 18109090, 19919999, 20968420, 36218180, 39839998, 79679996, 99599995, 199199990, 398399980]

約数ペア:

[(1, 398399980), (2, 199199990), (4, 99599995), (5, 79679996), (10, 39839998), (11, 36218180), (19, 20968420), (20, 19919999), (22, 18109090), (38, 10484210), (44, 9054545), (55, 7243636), (76, 5242105), (95, 4193684), (110, 3621818), (190, 2096842), (209, 1906220), (220, 1810909), (380, 1048421), (418, 953110), (836, 476555), (1045, 381244), (2090, 190622), (4180, 95311)]