18780904

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{947}}^1$

素因数の和:1057

約数の個数: 32

約数和(自身を含む): 36744480

約数和(自身を除く): 17963576

約数列:

[1, 2, 4, 8, 37, 67, 74, 134, 148, 268, 296, 536, 947, 1894, 2479, 3788, 4958, 7576, 9916, 19832, 35039, 63449, 70078, 126898, 140156, 253796, 280312, 507592, 2347613, 4695226, 9390452, 18780904]

約数ペア:

[(1, 18780904), (2, 9390452), (4, 4695226), (8, 2347613), (37, 507592), (67, 280312), (74, 253796), (134, 140156), (148, 126898), (268, 70078), (296, 63449), (536, 35039), (947, 19832), (1894, 9916), (2479, 7576), (3788, 4958)]