21883520

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1103}}^1$

素因数の和:1153

約数の個数: 64

約数和(自身を含む): 54051840

約数和(自身を除く): 32168320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1103, 1240, 1984, 2206, 2480, 3968, 4412, 4960, 5515, 8824, 9920, 11030, 17648, 19840, 22060, 34193, 35296, 44120, 68386, 70592, 88240, 136772, 141184, 170965, 176480, 273544, 341930, 352960, 547088, 683860, 705920, 1094176, 1367720, 2188352, 2735440, 4376704, 5470880, 10941760, 21883520]

約数ペア:

[(1, 21883520), (2, 10941760), (4, 5470880), (5, 4376704), (8, 2735440), (10, 2188352), (16, 1367720), (20, 1094176), (31, 705920), (32, 683860), (40, 547088), (62, 352960), (64, 341930), (80, 273544), (124, 176480), (128, 170965), (155, 141184), (160, 136772), (248, 88240), (310, 70592), (320, 68386), (496, 44120), (620, 35296), (640, 34193), (992, 22060), (1103, 19840), (1240, 17648), (1984, 11030), (2206, 9920), (2480, 8824), (3968, 5515), (4412, 4960)]