19981320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{269}}^1\times {\mathrm{619}}^1$

素因数の和:902

約数の個数: 64

約数和(自身を含む): 60264000

約数和(自身を除く): 40282680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 269, 538, 619, 807, 1076, 1238, 1345, 1614, 1857, 2152, 2476, 2690, 3095, 3228, 3714, 4035, 4952, 5380, 6190, 6456, 7428, 8070, 9285, 10760, 12380, 14856, 16140, 18570, 24760, 32280, 37140, 74280, 166511, 333022, 499533, 666044, 832555, 999066, 1332088, 1665110, 1998132, 2497665, 3330220, 3996264, 4995330, 6660440, 9990660, 19981320]

約数ペア:

[(1, 19981320), (2, 9990660), (3, 6660440), (4, 4995330), (5, 3996264), (6, 3330220), (8, 2497665), (10, 1998132), (12, 1665110), (15, 1332088), (20, 999066), (24, 832555), (30, 666044), (40, 499533), (60, 333022), (120, 166511), (269, 74280), (538, 37140), (619, 32280), (807, 24760), (1076, 18570), (1238, 16140), (1345, 14856), (1614, 12380), (1857, 10760), (2152, 9285), (2476, 8070), (2690, 7428), (3095, 6456), (3228, 6190), (3714, 5380), (4035, 4952)]