25989340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{5261}}^1$

素因数の和:5302

約数の個数: 48

約数和(自身を含む): 61881120

約数和(自身を除く): 35891780

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4940, 5261, 10522, 21044, 26305, 52610, 68393, 99959, 105220, 136786, 199918, 273572, 341965, 399836, 499795, 683930, 999590, 1299467, 1367860, 1999180, 2598934, 5197868, 6497335, 12994670, 25989340]

約数ペア:

[(1, 25989340), (2, 12994670), (4, 6497335), (5, 5197868), (10, 2598934), (13, 1999180), (19, 1367860), (20, 1299467), (26, 999590), (38, 683930), (52, 499795), (65, 399836), (76, 341965), (95, 273572), (130, 199918), (190, 136786), (247, 105220), (260, 99959), (380, 68393), (494, 52610), (988, 26305), (1235, 21044), (2470, 10522), (4940, 5261)]