20920250

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1$

素因数の和:228

約数の個数: 64

約数和(自身を含む): 43479072

約数和(自身を除く): 22558822

約数列:

[1, 2, 5, 10, 13, 25, 26, 41, 50, 65, 82, 125, 130, 157, 205, 250, 314, 325, 410, 533, 650, 785, 1025, 1066, 1570, 1625, 2041, 2050, 2665, 3250, 3925, 4082, 5125, 5330, 6437, 7850, 10205, 10250, 12874, 13325, 19625, 20410, 26650, 32185, 39250, 51025, 64370, 66625, 83681, 102050, 133250, 160925, 167362, 255125, 321850, 418405, 510250, 804625, 836810, 1609250, 2092025, 4184050, 10460125, 20920250]

約数ペア:

[(1, 20920250), (2, 10460125), (5, 4184050), (10, 2092025), (13, 1609250), (25, 836810), (26, 804625), (41, 510250), (50, 418405), (65, 321850), (82, 255125), (125, 167362), (130, 160925), (157, 133250), (205, 102050), (250, 83681), (314, 66625), (325, 64370), (410, 51025), (533, 39250), (650, 32185), (785, 26650), (1025, 20410), (1066, 19625), (1570, 13325), (1625, 12874), (2041, 10250), (2050, 10205), (2665, 7850), (3250, 6437), (3925, 5330), (4082, 5125)]