311617990

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{907}}^1$

素因数の和:1021

約数の個数: 64

約数和(自身を含む): 621333504

約数和(自身を除く): 309715514

約数列:

[1, 2, 5, 10, 17, 34, 43, 47, 85, 86, 94, 170, 215, 235, 430, 470, 731, 799, 907, 1462, 1598, 1814, 2021, 3655, 3995, 4042, 4535, 7310, 7990, 9070, 10105, 15419, 20210, 30838, 34357, 39001, 42629, 68714, 77095, 78002, 85258, 154190, 171785, 195005, 213145, 343570, 390010, 426290, 663017, 724693, 1326034, 1449386, 1833047, 3315085, 3623465, 3666094, 6630170, 7246930, 9165235, 18330470, 31161799, 62323598, 155808995, 311617990]

約数ペア:

[(1, 311617990), (2, 155808995), (5, 62323598), (10, 31161799), (17, 18330470), (34, 9165235), (43, 7246930), (47, 6630170), (85, 3666094), (86, 3623465), (94, 3315085), (170, 1833047), (215, 1449386), (235, 1326034), (430, 724693), (470, 663017), (731, 426290), (799, 390010), (907, 343570), (1462, 213145), (1598, 195005), (1814, 171785), (2021, 154190), (3655, 85258), (3995, 78002), (4042, 77095), (4535, 68714), (7310, 42629), (7990, 39001), (9070, 34357), (10105, 30838), (15419, 20210)]