20473580

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{379}}^1$

素因数の和:498

約数の個数: 48

約数和(自身を含む): 44879520

約数和(自身を除く): 24405940

約数列:

[1, 2, 4, 5, 10, 20, 37, 73, 74, 146, 148, 185, 292, 365, 370, 379, 730, 740, 758, 1460, 1516, 1895, 2701, 3790, 5402, 7580, 10804, 13505, 14023, 27010, 27667, 28046, 54020, 55334, 56092, 70115, 110668, 138335, 140230, 276670, 280460, 553340, 1023679, 2047358, 4094716, 5118395, 10236790, 20473580]

約数ペア:

[(1, 20473580), (2, 10236790), (4, 5118395), (5, 4094716), (10, 2047358), (20, 1023679), (37, 553340), (73, 280460), (74, 276670), (146, 140230), (148, 138335), (185, 110668), (292, 70115), (365, 56092), (370, 55334), (379, 54020), (730, 28046), (740, 27667), (758, 27010), (1460, 14023), (1516, 13505), (1895, 10804), (2701, 7580), (3790, 5402)]