221521105

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{1229}}^1$

素因数の和:1353

約数の個数: 32

約数和(自身を含む): 297561600

約数和(自身を除く): 76040495

約数列:

[1, 5, 13, 47, 59, 65, 235, 295, 611, 767, 1229, 2773, 3055, 3835, 6145, 13865, 15977, 36049, 57763, 72511, 79885, 180245, 288815, 362555, 750919, 942643, 3408017, 3754595, 4713215, 17040085, 44304221, 221521105]

約数ペア:

[(1, 221521105), (5, 44304221), (13, 17040085), (47, 4713215), (59, 3754595), (65, 3408017), (235, 942643), (295, 750919), (611, 362555), (767, 288815), (1229, 180245), (2773, 79885), (3055, 72511), (3835, 57763), (6145, 36049), (13865, 15977)]