256901876

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{191}}^1\times {\mathrm{397}}^1$

素因数の和:621

約数の個数: 72

約数和(自身を含む): 569146368

約数和(自身を除く): 312244492

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 121, 154, 191, 242, 308, 382, 397, 484, 764, 794, 847, 1337, 1588, 1694, 2101, 2674, 2779, 3388, 4202, 4367, 5348, 5558, 8404, 8734, 11116, 14707, 17468, 23111, 29414, 30569, 46222, 48037, 58828, 61138, 75827, 92444, 96074, 122276, 151654, 161777, 192148, 303308, 323554, 336259, 530789, 647108, 672518, 834097, 1061578, 1345036, 1668194, 2123156, 3336388, 5838679, 9175067, 11677358, 18350134, 23354716, 36700268, 64225469, 128450938, 256901876]

約数ペア:

[(1, 256901876), (2, 128450938), (4, 64225469), (7, 36700268), (11, 23354716), (14, 18350134), (22, 11677358), (28, 9175067), (44, 5838679), (77, 3336388), (121, 2123156), (154, 1668194), (191, 1345036), (242, 1061578), (308, 834097), (382, 672518), (397, 647108), (484, 530789), (764, 336259), (794, 323554), (847, 303308), (1337, 192148), (1588, 161777), (1694, 151654), (2101, 122276), (2674, 96074), (2779, 92444), (3388, 75827), (4202, 61138), (4367, 58828), (5348, 48037), (5558, 46222), (8404, 30569), (8734, 29414), (11116, 23111), (14707, 17468)]