21888520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{32189}}^1$

素因数の和:32217

約数の個数: 32

約数和(自身を含む): 52147800

約数和(自身を除く): 30259280

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 32189, 64378, 128756, 160945, 257512, 321890, 547213, 643780, 1094426, 1287560, 2188852, 2736065, 4377704, 5472130, 10944260, 21888520]

約数ペア:

[(1, 21888520), (2, 10944260), (4, 5472130), (5, 4377704), (8, 2736065), (10, 2188852), (17, 1287560), (20, 1094426), (34, 643780), (40, 547213), (68, 321890), (85, 257512), (136, 160945), (170, 128756), (340, 64378), (680, 32189)]