21751020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{811}}^1$

素因数の和:975

約数の個数: 72

約数和(自身を含む): 66502800

約数和(自身を除く): 44751780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 149, 180, 298, 447, 596, 745, 811, 894, 1341, 1490, 1622, 1788, 2235, 2433, 2682, 2980, 3244, 4055, 4470, 4866, 5364, 6705, 7299, 8110, 8940, 9732, 12165, 13410, 14598, 16220, 24330, 26820, 29196, 36495, 48660, 72990, 120839, 145980, 241678, 362517, 483356, 604195, 725034, 1087551, 1208390, 1450068, 1812585, 2175102, 2416780, 3625170, 4350204, 5437755, 7250340, 10875510, 21751020]

約数ペア:

[(1, 21751020), (2, 10875510), (3, 7250340), (4, 5437755), (5, 4350204), (6, 3625170), (9, 2416780), (10, 2175102), (12, 1812585), (15, 1450068), (18, 1208390), (20, 1087551), (30, 725034), (36, 604195), (45, 483356), (60, 362517), (90, 241678), (149, 145980), (180, 120839), (298, 72990), (447, 48660), (596, 36495), (745, 29196), (811, 26820), (894, 24330), (1341, 16220), (1490, 14598), (1622, 13410), (1788, 12165), (2235, 9732), (2433, 8940), (2682, 8110), (2980, 7299), (3244, 6705), (4055, 5364), (4470, 4866)]