21053732

素因数分解:

$2^2\times 7^2\times {\mathrm{163}}^1\times {\mathrm{659}}^1$

素因数の和:840

約数の個数: 36

約数和(自身を含む): 43187760

約数和(自身を除く): 22134028

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 163, 196, 326, 652, 659, 1141, 1318, 2282, 2636, 4564, 4613, 7987, 9226, 15974, 18452, 31948, 32291, 64582, 107417, 129164, 214834, 429668, 751919, 1503838, 3007676, 5263433, 10526866, 21053732]

約数ペア:

[(1, 21053732), (2, 10526866), (4, 5263433), (7, 3007676), (14, 1503838), (28, 751919), (49, 429668), (98, 214834), (163, 129164), (196, 107417), (326, 64582), (652, 32291), (659, 31948), (1141, 18452), (1318, 15974), (2282, 9226), (2636, 7987), (4564, 4613)]