201557840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{227}}^1\times {\mathrm{1009}}^1$

素因数の和:1260

約数の個数: 80

約数和(自身を含む): 513984960

約数和(自身を除く): 312427120

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 227, 440, 454, 880, 908, 1009, 1135, 1816, 2018, 2270, 2497, 3632, 4036, 4540, 4994, 5045, 8072, 9080, 9988, 10090, 11099, 12485, 16144, 18160, 19976, 20180, 22198, 24970, 39952, 40360, 44396, 49940, 55495, 80720, 88792, 99880, 110990, 177584, 199760, 221980, 229043, 443960, 458086, 887920, 916172, 1145215, 1832344, 2290430, 2519473, 3664688, 4580860, 5038946, 9161720, 10077892, 12597365, 18323440, 20155784, 25194730, 40311568, 50389460, 100778920, 201557840]

約数ペア:

[(1, 201557840), (2, 100778920), (4, 50389460), (5, 40311568), (8, 25194730), (10, 20155784), (11, 18323440), (16, 12597365), (20, 10077892), (22, 9161720), (40, 5038946), (44, 4580860), (55, 3664688), (80, 2519473), (88, 2290430), (110, 1832344), (176, 1145215), (220, 916172), (227, 887920), (440, 458086), (454, 443960), (880, 229043), (908, 221980), (1009, 199760), (1135, 177584), (1816, 110990), (2018, 99880), (2270, 88792), (2497, 80720), (3632, 55495), (4036, 49940), (4540, 44396), (4994, 40360), (5045, 39952), (8072, 24970), (9080, 22198), (9988, 20180), (10090, 19976), (11099, 18160), (12485, 16144)]