81487380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{104471}}^1$

素因数の和:104496

約数の個数: 48

約数和(自身を含む): 245718144

約数和(自身を除く): 164230764

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 104471, 208942, 313413, 417884, 522355, 626826, 1044710, 1253652, 1358123, 1567065, 2089420, 2716246, 3134130, 4074369, 5432492, 6268260, 6790615, 8148738, 13581230, 16297476, 20371845, 27162460, 40743690, 81487380]

約数ペア:

[(1, 81487380), (2, 40743690), (3, 27162460), (4, 20371845), (5, 16297476), (6, 13581230), (10, 8148738), (12, 6790615), (13, 6268260), (15, 5432492), (20, 4074369), (26, 3134130), (30, 2716246), (39, 2089420), (52, 1567065), (60, 1358123), (65, 1253652), (78, 1044710), (130, 626826), (156, 522355), (195, 417884), (260, 313413), (390, 208942), (780, 104471)]