28986460

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{149}}^1$

素因数の和:366

約数の個数: 48

約数和(自身を含む): 62596800

約数和(自身を除く): 33610340

約数列:

[1, 2, 4, 5, 10, 20, 71, 137, 142, 149, 274, 284, 298, 355, 548, 596, 685, 710, 745, 1370, 1420, 1490, 2740, 2980, 9727, 10579, 19454, 20413, 21158, 38908, 40826, 42316, 48635, 52895, 81652, 97270, 102065, 105790, 194540, 204130, 211580, 408260, 1449323, 2898646, 5797292, 7246615, 14493230, 28986460]

約数ペア:

[(1, 28986460), (2, 14493230), (4, 7246615), (5, 5797292), (10, 2898646), (20, 1449323), (71, 408260), (137, 211580), (142, 204130), (149, 194540), (274, 105790), (284, 102065), (298, 97270), (355, 81652), (548, 52895), (596, 48635), (685, 42316), (710, 40826), (745, 38908), (1370, 21158), (1420, 20413), (1490, 19454), (2740, 10579), (2980, 9727)]