20402551000

素因数分解:

$2^3\times 5^3\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{21499}}^1$

素因数の和:21606

約数の個数: 128

約数和(自身を含む): 52121160000

約数和(自身を除く): 31718609000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 73, 100, 104, 125, 130, 146, 200, 250, 260, 292, 325, 365, 500, 520, 584, 650, 730, 949, 1000, 1300, 1460, 1625, 1825, 1898, 2600, 2920, 3250, 3650, 3796, 4745, 6500, 7300, 7592, 9125, 9490, 13000, 14600, 18250, 18980, 21499, 23725, 36500, 37960, 42998, 47450, 73000, 85996, 94900, 107495, 118625, 171992, 189800, 214990, 237250, 279487, 429980, 474500, 537475, 558974, 859960, 949000, 1074950, 1117948, 1397435, 1569427, 2149900, 2235896, 2687375, 2794870, 3138854, 4299800, 5374750, 5589740, 6277708, 6987175, 7847135, 10749500, 11179480, 12555416, 13974350, 15694270, 20402551, 21499000, 27948700, 31388540, 34935875, 39235675, 40805102, 55897400, 62777080, 69871750, 78471350, 81610204, 102012755, 139743500, 156942700, 163220408, 196178375, 204025510, 279487000, 313885400, 392356750, 408051020, 510063775, 784713500, 816102040, 1020127550, 1569427000, 2040255100, 2550318875, 4080510200, 5100637750, 10201275500, 20402551000]

約数ペア:

[(1, 20402551000), (2, 10201275500), (4, 5100637750), (5, 4080510200), (8, 2550318875), (10, 2040255100), (13, 1569427000), (20, 1020127550), (25, 816102040), (26, 784713500), (40, 510063775), (50, 408051020), (52, 392356750), (65, 313885400), (73, 279487000), (100, 204025510), (104, 196178375), (125, 163220408), (130, 156942700), (146, 139743500), (200, 102012755), (250, 81610204), (260, 78471350), (292, 69871750), (325, 62777080), (365, 55897400), (500, 40805102), (520, 39235675), (584, 34935875), (650, 31388540), (730, 27948700), (949, 21499000), (1000, 20402551), (1300, 15694270), (1460, 13974350), (1625, 12555416), (1825, 11179480), (1898, 10749500), (2600, 7847135), (2920, 6987175), (3250, 6277708), (3650, 5589740), (3796, 5374750), (4745, 4299800), (6500, 3138854), (7300, 2794870), (7592, 2687375), (9125, 2235896), (9490, 2149900), (13000, 1569427), (14600, 1397435), (18250, 1117948), (18980, 1074950), (21499, 949000), (23725, 859960), (36500, 558974), (37960, 537475), (42998, 474500), (47450, 429980), (73000, 279487), (85996, 237250), (94900, 214990), (107495, 189800), (118625, 171992)]