80916820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{6869}}^1$

素因数の和:6928

約数の個数: 48

約数和(自身を含む): 184665600

約数和(自身を除く): 103748780

約数列:

[1, 2, 4, 5, 10, 19, 20, 31, 38, 62, 76, 95, 124, 155, 190, 310, 380, 589, 620, 1178, 2356, 2945, 5890, 6869, 11780, 13738, 27476, 34345, 68690, 130511, 137380, 212939, 261022, 425878, 522044, 652555, 851756, 1064695, 1305110, 2129390, 2610220, 4045841, 4258780, 8091682, 16183364, 20229205, 40458410, 80916820]

約数ペア:

[(1, 80916820), (2, 40458410), (4, 20229205), (5, 16183364), (10, 8091682), (19, 4258780), (20, 4045841), (31, 2610220), (38, 2129390), (62, 1305110), (76, 1064695), (95, 851756), (124, 652555), (155, 522044), (190, 425878), (310, 261022), (380, 212939), (589, 137380), (620, 130511), (1178, 68690), (2356, 34345), (2945, 27476), (5890, 13738), (6869, 11780)]