81354390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{10979}}^1$

素因数の和:11021

約数の個数: 64

約数和(自身を含む): 221356800

約数和(自身を除く): 140002410

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 19, 26, 30, 38, 39, 57, 65, 78, 95, 114, 130, 190, 195, 247, 285, 390, 494, 570, 741, 1235, 1482, 2470, 3705, 7410, 10979, 21958, 32937, 54895, 65874, 109790, 142727, 164685, 208601, 285454, 329370, 417202, 428181, 625803, 713635, 856362, 1043005, 1251606, 1427270, 2086010, 2140905, 2711813, 3129015, 4281810, 5423626, 6258030, 8135439, 13559065, 16270878, 27118130, 40677195, 81354390]

約数ペア:

[(1, 81354390), (2, 40677195), (3, 27118130), (5, 16270878), (6, 13559065), (10, 8135439), (13, 6258030), (15, 5423626), (19, 4281810), (26, 3129015), (30, 2711813), (38, 2140905), (39, 2086010), (57, 1427270), (65, 1251606), (78, 1043005), (95, 856362), (114, 713635), (130, 625803), (190, 428181), (195, 417202), (247, 329370), (285, 285454), (390, 208601), (494, 164685), (570, 142727), (741, 109790), (1235, 65874), (1482, 54895), (2470, 32937), (3705, 21958), (7410, 10979)]