18339020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{4517}}^1$

素因数の和:4562

約数の個数: 48

約数和(自身を含む): 45541440

約数和(自身を除く): 27202420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 4517, 9034, 18068, 22585, 31619, 45170, 63238, 90340, 126476, 130993, 158095, 261986, 316190, 523972, 632380, 654965, 916951, 1309930, 1833902, 2619860, 3667804, 4584755, 9169510, 18339020]

約数ペア:

[(1, 18339020), (2, 9169510), (4, 4584755), (5, 3667804), (7, 2619860), (10, 1833902), (14, 1309930), (20, 916951), (28, 654965), (29, 632380), (35, 523972), (58, 316190), (70, 261986), (116, 158095), (140, 130993), (145, 126476), (203, 90340), (290, 63238), (406, 45170), (580, 31619), (812, 22585), (1015, 18068), (2030, 9034), (4060, 4517)]