81016960

素因数分解:

$2^7\times 5^1\times {\mathrm{277}}^1\times {\mathrm{457}}^1$

素因数の和:753

約数の個数: 64

約数和(自身を含む): 194805720

約数和(自身を除く): 113788760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 277, 320, 457, 554, 640, 914, 1108, 1385, 1828, 2216, 2285, 2770, 3656, 4432, 4570, 5540, 7312, 8864, 9140, 11080, 14624, 17728, 18280, 22160, 29248, 35456, 36560, 44320, 58496, 73120, 88640, 126589, 146240, 177280, 253178, 292480, 506356, 632945, 1012712, 1265890, 2025424, 2531780, 4050848, 5063560, 8101696, 10127120, 16203392, 20254240, 40508480, 81016960]

約数ペア:

[(1, 81016960), (2, 40508480), (4, 20254240), (5, 16203392), (8, 10127120), (10, 8101696), (16, 5063560), (20, 4050848), (32, 2531780), (40, 2025424), (64, 1265890), (80, 1012712), (128, 632945), (160, 506356), (277, 292480), (320, 253178), (457, 177280), (554, 146240), (640, 126589), (914, 88640), (1108, 73120), (1385, 58496), (1828, 44320), (2216, 36560), (2285, 35456), (2770, 29248), (3656, 22160), (4432, 18280), (4570, 17728), (5540, 14624), (7312, 11080), (8864, 9140)]