17920580

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{397}}^1$

素因数の和:504

約数の個数: 48

約数和(自身を含む): 39382896

約数和(自身を除く): 21462316

約数列:

[1, 2, 4, 5, 10, 20, 37, 61, 74, 122, 148, 185, 244, 305, 370, 397, 610, 740, 794, 1220, 1588, 1985, 2257, 3970, 4514, 7940, 9028, 11285, 14689, 22570, 24217, 29378, 45140, 48434, 58756, 73445, 96868, 121085, 146890, 242170, 293780, 484340, 896029, 1792058, 3584116, 4480145, 8960290, 17920580]

約数ペア:

[(1, 17920580), (2, 8960290), (4, 4480145), (5, 3584116), (10, 1792058), (20, 896029), (37, 484340), (61, 293780), (74, 242170), (122, 146890), (148, 121085), (185, 96868), (244, 73445), (305, 58756), (370, 48434), (397, 45140), (610, 29378), (740, 24217), (794, 22570), (1220, 14689), (1588, 11285), (1985, 9028), (2257, 7940), (3970, 4514)]