15881920

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1601}}^1$

素因数の和:1649

約数の個数: 56

約数和(自身を含む): 39063168

約数和(自身を除く): 23181248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1601, 1984, 2480, 3202, 4960, 6404, 8005, 9920, 12808, 16010, 25616, 32020, 49631, 51232, 64040, 99262, 102464, 128080, 198524, 248155, 256160, 397048, 496310, 512320, 794096, 992620, 1588192, 1985240, 3176384, 3970480, 7940960, 15881920]

約数ペア:

[(1, 15881920), (2, 7940960), (4, 3970480), (5, 3176384), (8, 1985240), (10, 1588192), (16, 992620), (20, 794096), (31, 512320), (32, 496310), (40, 397048), (62, 256160), (64, 248155), (80, 198524), (124, 128080), (155, 102464), (160, 99262), (248, 64040), (310, 51232), (320, 49631), (496, 32020), (620, 25616), (992, 16010), (1240, 12808), (1601, 9920), (1984, 8005), (2480, 6404), (3202, 4960)]