21503690

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{3121}}^1$

素因数の和:3194

約数の個数: 32

約数和(自身を含む): 42484176

約数和(自身を除く): 20980486

約数列:

[1, 2, 5, 10, 13, 26, 53, 65, 106, 130, 265, 530, 689, 1378, 3121, 3445, 6242, 6890, 15605, 31210, 40573, 81146, 165413, 202865, 330826, 405730, 827065, 1654130, 2150369, 4300738, 10751845, 21503690]

約数ペア:

[(1, 21503690), (2, 10751845), (5, 4300738), (10, 2150369), (13, 1654130), (26, 827065), (53, 405730), (65, 330826), (106, 202865), (130, 165413), (265, 81146), (530, 40573), (689, 31210), (1378, 15605), (3121, 6890), (3445, 6242)]