20800180

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{467}}^1$

素因数の和:624

約数の個数: 48

約数和(自身を含む): 46702656

約数和(自身を除く): 25902476

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 131, 170, 262, 340, 467, 524, 655, 934, 1310, 1868, 2227, 2335, 2620, 4454, 4670, 7939, 8908, 9340, 11135, 15878, 22270, 31756, 39695, 44540, 61177, 79390, 122354, 158780, 244708, 305885, 611770, 1040009, 1223540, 2080018, 4160036, 5200045, 10400090, 20800180]

約数ペア:

[(1, 20800180), (2, 10400090), (4, 5200045), (5, 4160036), (10, 2080018), (17, 1223540), (20, 1040009), (34, 611770), (68, 305885), (85, 244708), (131, 158780), (170, 122354), (262, 79390), (340, 61177), (467, 44540), (524, 39695), (655, 31756), (934, 22270), (1310, 15878), (1868, 11135), (2227, 9340), (2335, 8908), (2620, 7939), (4454, 4670)]