80587780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{44279}}^1$

素因数の和:44308

約数の個数: 48

約数和(自身を含む): 208293120

約数和(自身を除く): 127705340

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 44279, 88558, 177116, 221395, 309953, 442790, 575627, 619906, 885580, 1151254, 1239812, 1549765, 2302508, 2878135, 3099530, 4029389, 5756270, 6199060, 8058778, 11512540, 16117556, 20146945, 40293890, 80587780]

約数ペア:

[(1, 80587780), (2, 40293890), (4, 20146945), (5, 16117556), (7, 11512540), (10, 8058778), (13, 6199060), (14, 5756270), (20, 4029389), (26, 3099530), (28, 2878135), (35, 2302508), (52, 1549765), (65, 1239812), (70, 1151254), (91, 885580), (130, 619906), (140, 575627), (182, 442790), (260, 309953), (364, 221395), (455, 177116), (910, 88558), (1820, 44279)]