639333478

素因数分解:

$2^1\times 7^4\times {\mathrm{29}}^1\times {\mathrm{4591}}^1$

素因数の和:4650

約数の個数: 40

約数和(自身を含む): 1157597280

約数和(自身を除く): 518263802

約数列:

[1, 2, 7, 14, 29, 49, 58, 98, 203, 343, 406, 686, 1421, 2401, 2842, 4591, 4802, 9182, 9947, 19894, 32137, 64274, 69629, 133139, 139258, 224959, 266278, 449918, 931973, 1574713, 1863946, 3149426, 6523811, 11022991, 13047622, 22045982, 45666677, 91333354, 319666739, 639333478]

約数ペア:

[(1, 639333478), (2, 319666739), (7, 91333354), (14, 45666677), (29, 22045982), (49, 13047622), (58, 11022991), (98, 6523811), (203, 3149426), (343, 1863946), (406, 1574713), (686, 931973), (1421, 449918), (2401, 266278), (2842, 224959), (4591, 139258), (4802, 133139), (9182, 69629), (9947, 64274), (19894, 32137)]