20102908

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{269}}^1$

素因数の和:454

約数の個数: 48

約数和(自身を含む): 43001280

約数和(自身を除く): 22898372

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 68, 119, 157, 238, 269, 314, 476, 538, 628, 1076, 1099, 1883, 2198, 2669, 3766, 4396, 4573, 5338, 7532, 9146, 10676, 18292, 18683, 32011, 37366, 42233, 64022, 74732, 84466, 128044, 168932, 295631, 591262, 717961, 1182524, 1435922, 2871844, 5025727, 10051454, 20102908]

約数ペア:

[(1, 20102908), (2, 10051454), (4, 5025727), (7, 2871844), (14, 1435922), (17, 1182524), (28, 717961), (34, 591262), (68, 295631), (119, 168932), (157, 128044), (238, 84466), (269, 74732), (314, 64022), (476, 42233), (538, 37366), (628, 32011), (1076, 18683), (1099, 18292), (1883, 10676), (2198, 9146), (2669, 7532), (3766, 5338), (4396, 4573)]