81479760

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{211}}^1\times {\mathrm{1609}}^1$

素因数の和:1836

約数の個数: 80

約数和(自身を含む): 253942080

約数和(自身を除く): 172462320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 211, 240, 422, 633, 844, 1055, 1266, 1609, 1688, 2110, 2532, 3165, 3218, 3376, 4220, 4827, 5064, 6330, 6436, 8045, 8440, 9654, 10128, 12660, 12872, 16090, 16880, 19308, 24135, 25320, 25744, 32180, 38616, 48270, 50640, 64360, 77232, 96540, 128720, 193080, 339499, 386160, 678998, 1018497, 1357996, 1697495, 2036994, 2715992, 3394990, 4073988, 5092485, 5431984, 6789980, 8147976, 10184970, 13579960, 16295952, 20369940, 27159920, 40739880, 81479760]

約数ペア:

[(1, 81479760), (2, 40739880), (3, 27159920), (4, 20369940), (5, 16295952), (6, 13579960), (8, 10184970), (10, 8147976), (12, 6789980), (15, 5431984), (16, 5092485), (20, 4073988), (24, 3394990), (30, 2715992), (40, 2036994), (48, 1697495), (60, 1357996), (80, 1018497), (120, 678998), (211, 386160), (240, 339499), (422, 193080), (633, 128720), (844, 96540), (1055, 77232), (1266, 64360), (1609, 50640), (1688, 48270), (2110, 38616), (2532, 32180), (3165, 25744), (3218, 25320), (3376, 24135), (4220, 19308), (4827, 16880), (5064, 16090), (6330, 12872), (6436, 12660), (8045, 10128), (8440, 9654)]