20583220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{233}}^1\times {\mathrm{631}}^1$

素因数の和:880

約数の個数: 48

約数和(自身を含む): 49690368

約数和(自身を除く): 29107148

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 233, 466, 631, 932, 1165, 1262, 1631, 2330, 2524, 3155, 3262, 4417, 4660, 6310, 6524, 8155, 8834, 12620, 16310, 17668, 22085, 32620, 44170, 88340, 147023, 294046, 588092, 735115, 1029161, 1470230, 2058322, 2940460, 4116644, 5145805, 10291610, 20583220]

約数ペア:

[(1, 20583220), (2, 10291610), (4, 5145805), (5, 4116644), (7, 2940460), (10, 2058322), (14, 1470230), (20, 1029161), (28, 735115), (35, 588092), (70, 294046), (140, 147023), (233, 88340), (466, 44170), (631, 32620), (932, 22085), (1165, 17668), (1262, 16310), (1631, 12620), (2330, 8834), (2524, 8155), (3155, 6524), (3262, 6310), (4417, 4660)]