20339140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{367}}^1$

素因数の和:556

約数の個数: 48

約数和(自身を含む): 45626112

約数和(自身を除く): 25286972

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 163, 170, 326, 340, 367, 652, 734, 815, 1468, 1630, 1835, 2771, 3260, 3670, 5542, 6239, 7340, 11084, 12478, 13855, 24956, 27710, 31195, 55420, 59821, 62390, 119642, 124780, 239284, 299105, 598210, 1016957, 1196420, 2033914, 4067828, 5084785, 10169570, 20339140]

約数ペア:

[(1, 20339140), (2, 10169570), (4, 5084785), (5, 4067828), (10, 2033914), (17, 1196420), (20, 1016957), (34, 598210), (68, 299105), (85, 239284), (163, 124780), (170, 119642), (326, 62390), (340, 59821), (367, 55420), (652, 31195), (734, 27710), (815, 24956), (1468, 13855), (1630, 12478), (1835, 11084), (2771, 7340), (3260, 6239), (3670, 5542)]