15390340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{521}}^1$

素因数の和:748

約数の個数: 48

約数和(自身を含む): 37183104

約数和(自身を除く): 21792764

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 211, 422, 521, 844, 1042, 1055, 1477, 2084, 2110, 2605, 2954, 3647, 4220, 5210, 5908, 7294, 7385, 10420, 14588, 14770, 18235, 29540, 36470, 72940, 109931, 219862, 439724, 549655, 769517, 1099310, 1539034, 2198620, 3078068, 3847585, 7695170, 15390340]

約数ペア:

[(1, 15390340), (2, 7695170), (4, 3847585), (5, 3078068), (7, 2198620), (10, 1539034), (14, 1099310), (20, 769517), (28, 549655), (35, 439724), (70, 219862), (140, 109931), (211, 72940), (422, 36470), (521, 29540), (844, 18235), (1042, 14770), (1055, 14588), (1477, 10420), (2084, 7385), (2110, 7294), (2605, 5908), (2954, 5210), (3647, 4220)]