21000871388

素因数分解:

$2^2\times 7^2\times {\mathrm{2069}}^1\times {\mathrm{51787}}^1$

素因数の和:53874

約数の個数: 36

約数和(自身を含む): 42773262840

約数和(自身を除く): 21772391452

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 2069, 4138, 8276, 14483, 28966, 51787, 57932, 101381, 103574, 202762, 207148, 362509, 405524, 725018, 1450036, 2537563, 5075126, 10150252, 107147303, 214294606, 428589212, 750031121, 1500062242, 3000124484, 5250217847, 10500435694, 21000871388]

約数ペア:

[(1, 21000871388), (2, 10500435694), (4, 5250217847), (7, 3000124484), (14, 1500062242), (28, 750031121), (49, 428589212), (98, 214294606), (196, 107147303), (2069, 10150252), (4138, 5075126), (8276, 2537563), (14483, 1450036), (28966, 725018), (51787, 405524), (57932, 362509), (101381, 207148), (103574, 202762)]