21420334

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{331}}^1$

素因数の和:496

約数の個数: 32

約数和(自身を含む): 36812160

約数和(自身を除く): 15391826

約数列:

[1, 2, 13, 19, 26, 38, 131, 247, 262, 331, 494, 662, 1703, 2489, 3406, 4303, 4978, 6289, 8606, 12578, 32357, 43361, 64714, 81757, 86722, 163514, 563693, 823859, 1127386, 1647718, 10710167, 21420334]

約数ペア:

[(1, 21420334), (2, 10710167), (13, 1647718), (19, 1127386), (26, 823859), (38, 563693), (131, 163514), (247, 86722), (262, 81757), (331, 64714), (494, 43361), (662, 32357), (1703, 12578), (2489, 8606), (3406, 6289), (4303, 4978)]