12951980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{163}}^1$

素因数の和:338

約数の個数: 48

約数和(自身を含む): 28516320

約数和(自身を除く): 15564340

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 137, 145, 163, 274, 290, 326, 548, 580, 652, 685, 815, 1370, 1630, 2740, 3260, 3973, 4727, 7946, 9454, 15892, 18908, 19865, 22331, 23635, 39730, 44662, 47270, 79460, 89324, 94540, 111655, 223310, 446620, 647599, 1295198, 2590396, 3237995, 6475990, 12951980]

約数ペア:

[(1, 12951980), (2, 6475990), (4, 3237995), (5, 2590396), (10, 1295198), (20, 647599), (29, 446620), (58, 223310), (116, 111655), (137, 94540), (145, 89324), (163, 79460), (274, 47270), (290, 44662), (326, 39730), (548, 23635), (580, 22331), (652, 19865), (685, 18908), (815, 15892), (1370, 9454), (1630, 7946), (2740, 4727), (3260, 3973)]