20805770844

素因数分解:

$2^2\times 3^2\times {\mathrm{563}}^1\times {\mathrm{661}}^1\times {\mathrm{1553}}^1$

素因数の和:2787

約数の個数: 72

約数和(自身を含む): 52799462352

約数和(自身を除く): 31993691508

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 563, 661, 1126, 1322, 1553, 1689, 1983, 2252, 2644, 3106, 3378, 3966, 4659, 5067, 5949, 6212, 6756, 7932, 9318, 10134, 11898, 13977, 18636, 20268, 23796, 27954, 55908, 372143, 744286, 874339, 1026533, 1116429, 1488572, 1748678, 2053066, 2232858, 2623017, 3079599, 3349287, 3497356, 4106132, 4465716, 5246034, 6159198, 6698574, 7869051, 9238797, 10492068, 12318396, 13397148, 15738102, 18477594, 31476204, 36955188, 577938079, 1155876158, 1733814237, 2311752316, 3467628474, 5201442711, 6935256948, 10402885422, 20805770844]

約数ペア:

[(1, 20805770844), (2, 10402885422), (3, 6935256948), (4, 5201442711), (6, 3467628474), (9, 2311752316), (12, 1733814237), (18, 1155876158), (36, 577938079), (563, 36955188), (661, 31476204), (1126, 18477594), (1322, 15738102), (1553, 13397148), (1689, 12318396), (1983, 10492068), (2252, 9238797), (2644, 7869051), (3106, 6698574), (3378, 6159198), (3966, 5246034), (4659, 4465716), (5067, 4106132), (5949, 3497356), (6212, 3349287), (6756, 3079599), (7932, 2623017), (9318, 2232858), (10134, 2053066), (11898, 1748678), (13977, 1488572), (18636, 1116429), (20268, 1026533), (23796, 874339), (27954, 744286), (55908, 372143)]