201621620

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{197}}^1\times {\mathrm{701}}^1$

素因数の和:980

約数の個数: 48

約数和(自身を含む): 431999568

約数和(自身を除く): 230377948

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 197, 292, 365, 394, 701, 730, 788, 985, 1402, 1460, 1970, 2804, 3505, 3940, 7010, 14020, 14381, 28762, 51173, 57524, 71905, 102346, 138097, 143810, 204692, 255865, 276194, 287620, 511730, 552388, 690485, 1023460, 1380970, 2761940, 10081081, 20162162, 40324324, 50405405, 100810810, 201621620]

約数ペア:

[(1, 201621620), (2, 100810810), (4, 50405405), (5, 40324324), (10, 20162162), (20, 10081081), (73, 2761940), (146, 1380970), (197, 1023460), (292, 690485), (365, 552388), (394, 511730), (701, 287620), (730, 276194), (788, 255865), (985, 204692), (1402, 143810), (1460, 138097), (1970, 102346), (2804, 71905), (3505, 57524), (3940, 51173), (7010, 28762), (14020, 14381)]