20725550

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{659}}^1$

素因数の和:725

約数の個数: 48

約数和(自身を含む): 41983920

約数和(自身を除く): 21258370

約数列:

[1, 2, 5, 10, 17, 25, 34, 37, 50, 74, 85, 170, 185, 370, 425, 629, 659, 850, 925, 1258, 1318, 1850, 3145, 3295, 6290, 6590, 11203, 15725, 16475, 22406, 24383, 31450, 32950, 48766, 56015, 112030, 121915, 243830, 280075, 414511, 560150, 609575, 829022, 1219150, 2072555, 4145110, 10362775, 20725550]

約数ペア:

[(1, 20725550), (2, 10362775), (5, 4145110), (10, 2072555), (17, 1219150), (25, 829022), (34, 609575), (37, 560150), (50, 414511), (74, 280075), (85, 243830), (170, 121915), (185, 112030), (370, 56015), (425, 48766), (629, 32950), (659, 31450), (850, 24383), (925, 22406), (1258, 16475), (1318, 15725), (1850, 11203), (3145, 6590), (3295, 6290)]