20728365440

素因数分解:

$2^7\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1408177}}^1$

素因数の和:1408219

約数の個数: 64

約数和(自身を含む): 51708296160

約数和(自身を除く): 30979930720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 128, 160, 184, 230, 320, 368, 460, 640, 736, 920, 1472, 1840, 2944, 3680, 7360, 14720, 1408177, 2816354, 5632708, 7040885, 11265416, 14081770, 22530832, 28163540, 32388071, 45061664, 56327080, 64776142, 90123328, 112654160, 129552284, 161940355, 180246656, 225308320, 259104568, 323880710, 450616640, 518209136, 647761420, 901233280, 1036418272, 1295522840, 2072836544, 2591045680, 4145673088, 5182091360, 10364182720, 20728365440]

約数ペア:

[(1, 20728365440), (2, 10364182720), (4, 5182091360), (5, 4145673088), (8, 2591045680), (10, 2072836544), (16, 1295522840), (20, 1036418272), (23, 901233280), (32, 647761420), (40, 518209136), (46, 450616640), (64, 323880710), (80, 259104568), (92, 225308320), (115, 180246656), (128, 161940355), (160, 129552284), (184, 112654160), (230, 90123328), (320, 64776142), (368, 56327080), (460, 45061664), (640, 32388071), (736, 28163540), (920, 22530832), (1472, 14081770), (1840, 11265416), (2944, 7040885), (3680, 5632708), (7360, 2816354), (14720, 1408177)]