311636860

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{2539}}^1$

素因数の和:2603

約数の個数: 72

約数和(自身を含む): 731611440

約数和(自身を除く): 419974580

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 170, 190, 323, 340, 361, 380, 646, 722, 1292, 1444, 1615, 1805, 2539, 3230, 3610, 5078, 6137, 6460, 7220, 10156, 12274, 12695, 24548, 25390, 30685, 43163, 48241, 50780, 61370, 86326, 96482, 122740, 172652, 192964, 215815, 241205, 431630, 482410, 820097, 863260, 916579, 964820, 1640194, 1833158, 3280388, 3666316, 4100485, 4582895, 8200970, 9165790, 15581843, 16401940, 18331580, 31163686, 62327372, 77909215, 155818430, 311636860]

約数ペア:

[(1, 311636860), (2, 155818430), (4, 77909215), (5, 62327372), (10, 31163686), (17, 18331580), (19, 16401940), (20, 15581843), (34, 9165790), (38, 8200970), (68, 4582895), (76, 4100485), (85, 3666316), (95, 3280388), (170, 1833158), (190, 1640194), (323, 964820), (340, 916579), (361, 863260), (380, 820097), (646, 482410), (722, 431630), (1292, 241205), (1444, 215815), (1615, 192964), (1805, 172652), (2539, 122740), (3230, 96482), (3610, 86326), (5078, 61370), (6137, 50780), (6460, 48241), (7220, 43163), (10156, 30685), (12274, 25390), (12695, 24548)]