18211020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{257}}^1\times {\mathrm{1181}}^1$

素因数の和:1450

約数の個数: 48

約数和(自身を含む): 51232608

約数和(自身を除く): 33021588

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 257, 514, 771, 1028, 1181, 1285, 1542, 2362, 2570, 3084, 3543, 3855, 4724, 5140, 5905, 7086, 7710, 11810, 14172, 15420, 17715, 23620, 35430, 70860, 303517, 607034, 910551, 1214068, 1517585, 1821102, 3035170, 3642204, 4552755, 6070340, 9105510, 18211020]

約数ペア:

[(1, 18211020), (2, 9105510), (3, 6070340), (4, 4552755), (5, 3642204), (6, 3035170), (10, 1821102), (12, 1517585), (15, 1214068), (20, 910551), (30, 607034), (60, 303517), (257, 70860), (514, 35430), (771, 23620), (1028, 17715), (1181, 15420), (1285, 14172), (1542, 11810), (2362, 7710), (2570, 7086), (3084, 5905), (3543, 5140), (3855, 4724)]