18801920

素因数分解:

$2^8\times 5^1\times {\mathrm{37}}^1\times {\mathrm{397}}^1$

素因数の和:455

約数の個数: 72

約数和(自身を含む): 46370184

約数和(自身を除く): 27568264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 64, 74, 80, 128, 148, 160, 185, 256, 296, 320, 370, 397, 592, 640, 740, 794, 1184, 1280, 1480, 1588, 1985, 2368, 2960, 3176, 3970, 4736, 5920, 6352, 7940, 9472, 11840, 12704, 14689, 15880, 23680, 25408, 29378, 31760, 47360, 50816, 58756, 63520, 73445, 101632, 117512, 127040, 146890, 235024, 254080, 293780, 470048, 508160, 587560, 940096, 1175120, 1880192, 2350240, 3760384, 4700480, 9400960, 18801920]

約数ペア:

[(1, 18801920), (2, 9400960), (4, 4700480), (5, 3760384), (8, 2350240), (10, 1880192), (16, 1175120), (20, 940096), (32, 587560), (37, 508160), (40, 470048), (64, 293780), (74, 254080), (80, 235024), (128, 146890), (148, 127040), (160, 117512), (185, 101632), (256, 73445), (296, 63520), (320, 58756), (370, 50816), (397, 47360), (592, 31760), (640, 29378), (740, 25408), (794, 23680), (1184, 15880), (1280, 14689), (1480, 12704), (1588, 11840), (1985, 9472), (2368, 7940), (2960, 6352), (3176, 5920), (3970, 4736)]