19965010

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{137}}^1$

素因数の和:235

約数の個数: 64

約数和(自身を含む): 41731200

約数和(自身を除く): 21766190

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 59, 65, 95, 118, 130, 137, 190, 247, 274, 295, 494, 590, 685, 767, 1121, 1235, 1370, 1534, 1781, 2242, 2470, 2603, 3562, 3835, 5206, 5605, 7670, 8083, 8905, 11210, 13015, 14573, 16166, 17810, 26030, 29146, 33839, 40415, 67678, 72865, 80830, 105079, 145730, 153577, 169195, 210158, 307154, 338390, 525395, 767885, 1050790, 1535770, 1996501, 3993002, 9982505, 19965010]

約数ペア:

[(1, 19965010), (2, 9982505), (5, 3993002), (10, 1996501), (13, 1535770), (19, 1050790), (26, 767885), (38, 525395), (59, 338390), (65, 307154), (95, 210158), (118, 169195), (130, 153577), (137, 145730), (190, 105079), (247, 80830), (274, 72865), (295, 67678), (494, 40415), (590, 33839), (685, 29146), (767, 26030), (1121, 17810), (1235, 16166), (1370, 14573), (1534, 13015), (1781, 11210), (2242, 8905), (2470, 8083), (2603, 7670), (3562, 5605), (3835, 5206)]