18721760

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{6883}}^1$

素因数の和:6915

約数の個数: 48

約数和(自身を含む): 46838736

約数和(自身を除く): 28116976

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 6883, 13766, 27532, 34415, 55064, 68830, 110128, 117011, 137660, 220256, 234022, 275320, 468044, 550640, 585055, 936088, 1101280, 1170110, 1872176, 2340220, 3744352, 4680440, 9360880, 18721760]

約数ペア:

[(1, 18721760), (2, 9360880), (4, 4680440), (5, 3744352), (8, 2340220), (10, 1872176), (16, 1170110), (17, 1101280), (20, 936088), (32, 585055), (34, 550640), (40, 468044), (68, 275320), (80, 234022), (85, 220256), (136, 137660), (160, 117011), (170, 110128), (272, 68830), (340, 55064), (544, 34415), (680, 27532), (1360, 13766), (2720, 6883)]