1821987580

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{109363}}^1$

素因数の和:109403

約数の個数: 72

約数和(自身を含む): 4712713488

約数和(自身を除く): 2890725908

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 49, 68, 70, 85, 98, 119, 140, 170, 196, 238, 245, 340, 476, 490, 595, 833, 980, 1190, 1666, 2380, 3332, 4165, 8330, 16660, 109363, 218726, 437452, 546815, 765541, 1093630, 1531082, 1859171, 2187260, 3062164, 3718342, 3827705, 5358787, 7436684, 7655410, 9295855, 10717574, 13014197, 15310820, 18591710, 21435148, 26028394, 26793935, 37183420, 52056788, 53587870, 65070985, 91099379, 107175740, 130141970, 182198758, 260283940, 364397516, 455496895, 910993790, 1821987580]

約数ペア:

[(1, 1821987580), (2, 910993790), (4, 455496895), (5, 364397516), (7, 260283940), (10, 182198758), (14, 130141970), (17, 107175740), (20, 91099379), (28, 65070985), (34, 53587870), (35, 52056788), (49, 37183420), (68, 26793935), (70, 26028394), (85, 21435148), (98, 18591710), (119, 15310820), (140, 13014197), (170, 10717574), (196, 9295855), (238, 7655410), (245, 7436684), (340, 5358787), (476, 3827705), (490, 3718342), (595, 3062164), (833, 2187260), (980, 1859171), (1190, 1531082), (1666, 1093630), (2380, 765541), (3332, 546815), (4165, 437452), (8330, 218726), (16660, 109363)]