19407140

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{173}}^1$

素因数の和:332

約数の個数: 48

約数和(自身を含む): 42094080

約数和(自身を除く): 22686940

約数列:

[1, 2, 4, 5, 10, 20, 71, 79, 142, 158, 173, 284, 316, 346, 355, 395, 692, 710, 790, 865, 1420, 1580, 1730, 3460, 5609, 11218, 12283, 13667, 22436, 24566, 27334, 28045, 49132, 54668, 56090, 61415, 68335, 112180, 122830, 136670, 245660, 273340, 970357, 1940714, 3881428, 4851785, 9703570, 19407140]

約数ペア:

[(1, 19407140), (2, 9703570), (4, 4851785), (5, 3881428), (10, 1940714), (20, 970357), (71, 273340), (79, 245660), (142, 136670), (158, 122830), (173, 112180), (284, 68335), (316, 61415), (346, 56090), (355, 54668), (395, 49132), (692, 28045), (710, 27334), (790, 24566), (865, 22436), (1420, 13667), (1580, 12283), (1730, 11218), (3460, 5609)]