161277280

素因数分解:

$2^5\times 5^1\times {\mathrm{397}}^1\times {\mathrm{2539}}^1$

素因数の和:2951

約数の個数: 48

約数和(自身を含む): 382127760

約数和(自身を除く): 220850480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 397, 794, 1588, 1985, 2539, 3176, 3970, 5078, 6352, 7940, 10156, 12695, 12704, 15880, 20312, 25390, 31760, 40624, 50780, 63520, 81248, 101560, 203120, 406240, 1007983, 2015966, 4031932, 5039915, 8063864, 10079830, 16127728, 20159660, 32255456, 40319320, 80638640, 161277280]

約数ペア:

[(1, 161277280), (2, 80638640), (4, 40319320), (5, 32255456), (8, 20159660), (10, 16127728), (16, 10079830), (20, 8063864), (32, 5039915), (40, 4031932), (80, 2015966), (160, 1007983), (397, 406240), (794, 203120), (1588, 101560), (1985, 81248), (2539, 63520), (3176, 50780), (3970, 40624), (5078, 31760), (6352, 25390), (7940, 20312), (10156, 15880), (12695, 12704)]