20313680

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{8191}}^1$

素因数の和:8235

約数の個数: 40

約数和(自身を含む): 48758784

約数和(自身を除く): 28445104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 8191, 16382, 32764, 40955, 65528, 81910, 131056, 163820, 253921, 327640, 507842, 655280, 1015684, 1269605, 2031368, 2539210, 4062736, 5078420, 10156840, 20313680]

約数ペア:

[(1, 20313680), (2, 10156840), (4, 5078420), (5, 4062736), (8, 2539210), (10, 2031368), (16, 1269605), (20, 1015684), (31, 655280), (40, 507842), (62, 327640), (80, 253921), (124, 163820), (155, 131056), (248, 81910), (310, 65528), (496, 40955), (620, 32764), (1240, 16382), (2480, 8191)]