21819120

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{229}}^1\times {\mathrm{397}}^1$

素因数の和:642

約数の個数: 80

約数和(自身を含む): 68105760

約数和(自身を除く): 46286640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 229, 240, 397, 458, 687, 794, 916, 1145, 1191, 1374, 1588, 1832, 1985, 2290, 2382, 2748, 3176, 3435, 3664, 3970, 4580, 4764, 5496, 5955, 6352, 6870, 7940, 9160, 9528, 10992, 11910, 13740, 15880, 18320, 19056, 23820, 27480, 31760, 47640, 54960, 90913, 95280, 181826, 272739, 363652, 454565, 545478, 727304, 909130, 1090956, 1363695, 1454608, 1818260, 2181912, 2727390, 3636520, 4363824, 5454780, 7273040, 10909560, 21819120]

約数ペア:

[(1, 21819120), (2, 10909560), (3, 7273040), (4, 5454780), (5, 4363824), (6, 3636520), (8, 2727390), (10, 2181912), (12, 1818260), (15, 1454608), (16, 1363695), (20, 1090956), (24, 909130), (30, 727304), (40, 545478), (48, 454565), (60, 363652), (80, 272739), (120, 181826), (229, 95280), (240, 90913), (397, 54960), (458, 47640), (687, 31760), (794, 27480), (916, 23820), (1145, 19056), (1191, 18320), (1374, 15880), (1588, 13740), (1832, 11910), (1985, 10992), (2290, 9528), (2382, 9160), (2748, 7940), (3176, 6870), (3435, 6352), (3664, 5955), (3970, 5496), (4580, 4764)]