20351185

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:225

約数の個数: 32

約数和(自身を含む): 27216000

約数和(自身を除く): 6864815

約数列:

[1, 5, 19, 29, 83, 89, 95, 145, 415, 445, 551, 1577, 1691, 2407, 2581, 2755, 7387, 7885, 8455, 12035, 12905, 36935, 45733, 49039, 140353, 214223, 228665, 245195, 701765, 1071115, 4070237, 20351185]

約数ペア:

[(1, 20351185), (5, 4070237), (19, 1071115), (29, 701765), (83, 245195), (89, 228665), (95, 214223), (145, 140353), (415, 49039), (445, 45733), (551, 36935), (1577, 12905), (1691, 12035), (2407, 8455), (2581, 7885), (2755, 7387)]