21378780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{1627}}^1$

素因数の和:1715

約数の個数: 72

約数和(自身を含む): 65777712

約数和(自身を除く): 44398932

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 73, 90, 146, 180, 219, 292, 365, 438, 657, 730, 876, 1095, 1314, 1460, 1627, 2190, 2628, 3254, 3285, 4380, 4881, 6508, 6570, 8135, 9762, 13140, 14643, 16270, 19524, 24405, 29286, 32540, 48810, 58572, 73215, 97620, 118771, 146430, 237542, 292860, 356313, 475084, 593855, 712626, 1068939, 1187710, 1425252, 1781565, 2137878, 2375420, 3563130, 4275756, 5344695, 7126260, 10689390, 21378780]

約数ペア:

[(1, 21378780), (2, 10689390), (3, 7126260), (4, 5344695), (5, 4275756), (6, 3563130), (9, 2375420), (10, 2137878), (12, 1781565), (15, 1425252), (18, 1187710), (20, 1068939), (30, 712626), (36, 593855), (45, 475084), (60, 356313), (73, 292860), (90, 237542), (146, 146430), (180, 118771), (219, 97620), (292, 73215), (365, 58572), (438, 48810), (657, 32540), (730, 29286), (876, 24405), (1095, 19524), (1314, 16270), (1460, 14643), (1627, 13140), (2190, 9762), (2628, 8135), (3254, 6570), (3285, 6508), (4380, 4881)]