21077961836

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{3877}}^1\times {\mathrm{4703}}^1$

素因数の和:8618

約数の個数: 36

約数和(自身を含む): 39202298688

約数和(自身を除く): 18124336852

約数列:

[1, 2, 4, 17, 34, 68, 289, 578, 1156, 3877, 4703, 7754, 9406, 15508, 18812, 65909, 79951, 131818, 159902, 263636, 319804, 1120453, 1359167, 2240906, 2718334, 4481812, 5436668, 18233531, 36467062, 72934124, 309970027, 619940054, 1239880108, 5269490459, 10538980918, 21077961836]

約数ペア:

[(1, 21077961836), (2, 10538980918), (4, 5269490459), (17, 1239880108), (34, 619940054), (68, 309970027), (289, 72934124), (578, 36467062), (1156, 18233531), (3877, 5436668), (4703, 4481812), (7754, 2718334), (9406, 2240906), (15508, 1359167), (18812, 1120453), (65909, 319804), (79951, 263636), (131818, 159902)]