21031300

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1$

素因数の和:197

約数の個数: 72

約数和(自身を含む): 48045536

約数和(自身を除く): 27014236

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 67, 73, 86, 100, 134, 146, 172, 215, 268, 292, 335, 365, 430, 670, 730, 860, 1075, 1340, 1460, 1675, 1825, 2150, 2881, 3139, 3350, 3650, 4300, 4891, 5762, 6278, 6700, 7300, 9782, 11524, 12556, 14405, 15695, 19564, 24455, 28810, 31390, 48910, 57620, 62780, 72025, 78475, 97820, 122275, 144050, 156950, 210313, 244550, 288100, 313900, 420626, 489100, 841252, 1051565, 2103130, 4206260, 5257825, 10515650, 21031300]

約数ペア:

[(1, 21031300), (2, 10515650), (4, 5257825), (5, 4206260), (10, 2103130), (20, 1051565), (25, 841252), (43, 489100), (50, 420626), (67, 313900), (73, 288100), (86, 244550), (100, 210313), (134, 156950), (146, 144050), (172, 122275), (215, 97820), (268, 78475), (292, 72025), (335, 62780), (365, 57620), (430, 48910), (670, 31390), (730, 28810), (860, 24455), (1075, 19564), (1340, 15695), (1460, 14405), (1675, 12556), (1825, 11524), (2150, 9782), (2881, 7300), (3139, 6700), (3350, 6278), (3650, 5762), (4300, 4891)]