261655550

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{4523}}^1$

素因数の和:4637

約数の個数: 48

約数和(自身を含む): 530122320

約数和(自身を除く): 268466770

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 89, 130, 178, 325, 445, 650, 890, 1157, 2225, 2314, 4450, 4523, 5785, 9046, 11570, 22615, 28925, 45230, 57850, 58799, 113075, 117598, 226150, 293995, 402547, 587990, 805094, 1469975, 2012735, 2939950, 4025470, 5233111, 10063675, 10466222, 20127350, 26165555, 52331110, 130827775, 261655550]

約数ペア:

[(1, 261655550), (2, 130827775), (5, 52331110), (10, 26165555), (13, 20127350), (25, 10466222), (26, 10063675), (50, 5233111), (65, 4025470), (89, 2939950), (130, 2012735), (178, 1469975), (325, 805094), (445, 587990), (650, 402547), (890, 293995), (1157, 226150), (2225, 117598), (2314, 113075), (4450, 58799), (4523, 57850), (5785, 45230), (9046, 28925), (11570, 22615)]