21371940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{3209}}^1$

素因数の和:3261

約数の個数: 72

約数和(自身を含む): 66601080

約数和(自身を除く): 45229140

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 37, 45, 60, 74, 90, 111, 148, 180, 185, 222, 333, 370, 444, 555, 666, 740, 1110, 1332, 1665, 2220, 3209, 3330, 6418, 6660, 9627, 12836, 16045, 19254, 28881, 32090, 38508, 48135, 57762, 64180, 96270, 115524, 118733, 144405, 192540, 237466, 288810, 356199, 474932, 577620, 593665, 712398, 1068597, 1187330, 1424796, 1780995, 2137194, 2374660, 3561990, 4274388, 5342985, 7123980, 10685970, 21371940]

約数ペア:

[(1, 21371940), (2, 10685970), (3, 7123980), (4, 5342985), (5, 4274388), (6, 3561990), (9, 2374660), (10, 2137194), (12, 1780995), (15, 1424796), (18, 1187330), (20, 1068597), (30, 712398), (36, 593665), (37, 577620), (45, 474932), (60, 356199), (74, 288810), (90, 237466), (111, 192540), (148, 144405), (180, 118733), (185, 115524), (222, 96270), (333, 64180), (370, 57762), (444, 48135), (555, 38508), (666, 32090), (740, 28881), (1110, 19254), (1332, 16045), (1665, 12836), (2220, 9627), (3209, 6660), (3330, 6418)]