218294020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{7681}}^1$

素因数の和:7733

約数の個数: 72

約数和(自身を含む): 551721240

約数和(自身を除く): 333427220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 49, 58, 70, 98, 116, 140, 145, 196, 203, 245, 290, 406, 490, 580, 812, 980, 1015, 1421, 2030, 2842, 4060, 5684, 7105, 7681, 14210, 15362, 28420, 30724, 38405, 53767, 76810, 107534, 153620, 215068, 222749, 268835, 376369, 445498, 537670, 752738, 890996, 1075340, 1113745, 1505476, 1559243, 1881845, 2227490, 3118486, 3763690, 4454980, 6236972, 7527380, 7796215, 10914701, 15592430, 21829402, 31184860, 43658804, 54573505, 109147010, 218294020]

約数ペア:

[(1, 218294020), (2, 109147010), (4, 54573505), (5, 43658804), (7, 31184860), (10, 21829402), (14, 15592430), (20, 10914701), (28, 7796215), (29, 7527380), (35, 6236972), (49, 4454980), (58, 3763690), (70, 3118486), (98, 2227490), (116, 1881845), (140, 1559243), (145, 1505476), (196, 1113745), (203, 1075340), (245, 890996), (290, 752738), (406, 537670), (490, 445498), (580, 376369), (812, 268835), (980, 222749), (1015, 215068), (1421, 153620), (2030, 107534), (2842, 76810), (4060, 53767), (5684, 38405), (7105, 30724), (7681, 28420), (14210, 15362)]