20549450

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{223}}^1$

素因数の和:351

約数の個数: 48

約数和(自身を含む): 40830720

約数和(自身を除く): 20281270

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 95, 97, 190, 194, 223, 446, 475, 485, 950, 970, 1115, 1843, 2230, 2425, 3686, 4237, 4850, 5575, 8474, 9215, 11150, 18430, 21185, 21631, 42370, 43262, 46075, 92150, 105925, 108155, 211850, 216310, 410989, 540775, 821978, 1081550, 2054945, 4109890, 10274725, 20549450]

約数ペア:

[(1, 20549450), (2, 10274725), (5, 4109890), (10, 2054945), (19, 1081550), (25, 821978), (38, 540775), (50, 410989), (95, 216310), (97, 211850), (190, 108155), (194, 105925), (223, 92150), (446, 46075), (475, 43262), (485, 42370), (950, 21631), (970, 21185), (1115, 18430), (1843, 11150), (2230, 9215), (2425, 8474), (3686, 5575), (4237, 4850)]