19908777

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{877}}^1$

素因数の和:957

約数の個数: 32

約数和(自身を含む): 32366592

約数和(自身を除く): 12457815

約数列:

[1, 3, 7, 21, 23, 47, 69, 141, 161, 329, 483, 877, 987, 1081, 2631, 3243, 6139, 7567, 18417, 20171, 22701, 41219, 60513, 123657, 141197, 288533, 423591, 865599, 948037, 2844111, 6636259, 19908777]

約数ペア:

[(1, 19908777), (3, 6636259), (7, 2844111), (21, 948037), (23, 865599), (47, 423591), (69, 288533), (141, 141197), (161, 123657), (329, 60513), (483, 41219), (877, 22701), (987, 20171), (1081, 18417), (2631, 7567), (3243, 6139)]