20529440

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{4139}}^1$

素因数の和:4185

約数の個数: 48

約数和(自身を含む): 50077440

約数和(自身を除く): 29548000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 992, 1240, 2480, 4139, 4960, 8278, 16556, 20695, 33112, 41390, 66224, 82780, 128309, 132448, 165560, 256618, 331120, 513236, 641545, 662240, 1026472, 1283090, 2052944, 2566180, 4105888, 5132360, 10264720, 20529440]

約数ペア:

[(1, 20529440), (2, 10264720), (4, 5132360), (5, 4105888), (8, 2566180), (10, 2052944), (16, 1283090), (20, 1026472), (31, 662240), (32, 641545), (40, 513236), (62, 331120), (80, 256618), (124, 165560), (155, 132448), (160, 128309), (248, 82780), (310, 66224), (496, 41390), (620, 33112), (992, 20695), (1240, 16556), (2480, 8278), (4139, 4960)]