20188845

素因数分解:

$3^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{631}}^1$

素因数の和:727

約数の個数: 40

約数和(自身を含む): 36706560

約数和(自身を除く): 16517715

約数列:

[1, 3, 5, 9, 15, 27, 45, 79, 81, 135, 237, 395, 405, 631, 711, 1185, 1893, 2133, 3155, 3555, 5679, 6399, 9465, 10665, 17037, 28395, 31995, 49849, 51111, 85185, 149547, 249245, 255555, 448641, 747735, 1345923, 2243205, 4037769, 6729615, 20188845]

約数ペア:

[(1, 20188845), (3, 6729615), (5, 4037769), (9, 2243205), (15, 1345923), (27, 747735), (45, 448641), (79, 255555), (81, 249245), (135, 149547), (237, 85185), (395, 51111), (405, 49849), (631, 31995), (711, 28395), (1185, 17037), (1893, 10665), (2133, 9465), (3155, 6399), (3555, 5679)]