404865280

素因数分解:

$2^8\times 5^1\times {\mathrm{316301}}^1$

素因数の和:316322

約数の個数: 36

約数和(自身を含む): 969781932

約数和(自身を除く): 564916652

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 316301, 632602, 1265204, 1581505, 2530408, 3163010, 5060816, 6326020, 10121632, 12652040, 20243264, 25304080, 40486528, 50608160, 80973056, 101216320, 202432640, 404865280]

約数ペア:

[(1, 404865280), (2, 202432640), (4, 101216320), (5, 80973056), (8, 50608160), (10, 40486528), (16, 25304080), (20, 20243264), (32, 12652040), (40, 10121632), (64, 6326020), (80, 5060816), (128, 3163010), (160, 2530408), (256, 1581505), (320, 1265204), (640, 632602), (1280, 316301)]