20720224

素因数分解:

$2^5\times 7^1\times {\mathrm{233}}^1\times {\mathrm{397}}^1$

素因数の和:647

約数の個数: 48

約数和(自身を含む): 46938528

約数和(自身を除く): 26218304

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 224, 233, 397, 466, 794, 932, 1588, 1631, 1864, 2779, 3176, 3262, 3728, 5558, 6352, 6524, 7456, 11116, 12704, 13048, 22232, 26096, 44464, 52192, 88928, 92501, 185002, 370004, 647507, 740008, 1295014, 1480016, 2590028, 2960032, 5180056, 10360112, 20720224]

約数ペア:

[(1, 20720224), (2, 10360112), (4, 5180056), (7, 2960032), (8, 2590028), (14, 1480016), (16, 1295014), (28, 740008), (32, 647507), (56, 370004), (112, 185002), (224, 92501), (233, 88928), (397, 52192), (466, 44464), (794, 26096), (932, 22232), (1588, 13048), (1631, 12704), (1864, 11116), (2779, 7456), (3176, 6524), (3262, 6352), (3728, 5558)]