21432540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{523}}^1\times {\mathrm{683}}^1$

素因数の和:1218

約数の個数: 48

約数和(自身を含む): 60213888

約数和(自身を除く): 38781348

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 523, 683, 1046, 1366, 1569, 2049, 2092, 2615, 2732, 3138, 3415, 4098, 5230, 6276, 6830, 7845, 8196, 10245, 10460, 13660, 15690, 20490, 31380, 40980, 357209, 714418, 1071627, 1428836, 1786045, 2143254, 3572090, 4286508, 5358135, 7144180, 10716270, 21432540]

約数ペア:

[(1, 21432540), (2, 10716270), (3, 7144180), (4, 5358135), (5, 4286508), (6, 3572090), (10, 2143254), (12, 1786045), (15, 1428836), (20, 1071627), (30, 714418), (60, 357209), (523, 40980), (683, 31380), (1046, 20490), (1366, 15690), (1569, 13660), (2049, 10460), (2092, 10245), (2615, 8196), (2732, 7845), (3138, 6830), (3415, 6276), (4098, 5230)]