28639850

素因数分解:

$2^1\times 5^2\times {\mathrm{37}}^1\times {\mathrm{113}}^1\times {\mathrm{137}}^1$

素因数の和:299

約数の個数: 48

約数和(自身を含む): 55596888

約数和(自身を除く): 26957038

約数列:

[1, 2, 5, 10, 25, 37, 50, 74, 113, 137, 185, 226, 274, 370, 565, 685, 925, 1130, 1370, 1850, 2825, 3425, 4181, 5069, 5650, 6850, 8362, 10138, 15481, 20905, 25345, 30962, 41810, 50690, 77405, 104525, 126725, 154810, 209050, 253450, 387025, 572797, 774050, 1145594, 2863985, 5727970, 14319925, 28639850]

約数ペア:

[(1, 28639850), (2, 14319925), (5, 5727970), (10, 2863985), (25, 1145594), (37, 774050), (50, 572797), (74, 387025), (113, 253450), (137, 209050), (185, 154810), (226, 126725), (274, 104525), (370, 77405), (565, 50690), (685, 41810), (925, 30962), (1130, 25345), (1370, 20905), (1850, 15481), (2825, 10138), (3425, 8362), (4181, 6850), (5069, 5650)]