20189715

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{2113}}^1$

素因数の和:2148

約数の個数: 48

約数和(自身を含む): 40487328

約数和(自身を除く): 20297613

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 49, 65, 91, 105, 147, 195, 245, 273, 455, 637, 735, 1365, 1911, 2113, 3185, 6339, 9555, 10565, 14791, 27469, 31695, 44373, 73955, 82407, 103537, 137345, 192283, 221865, 310611, 412035, 517685, 576849, 961415, 1345981, 1553055, 2884245, 4037943, 6729905, 20189715]

約数ペア:

[(1, 20189715), (3, 6729905), (5, 4037943), (7, 2884245), (13, 1553055), (15, 1345981), (21, 961415), (35, 576849), (39, 517685), (49, 412035), (65, 310611), (91, 221865), (105, 192283), (147, 137345), (195, 103537), (245, 82407), (273, 73955), (455, 44373), (637, 31695), (735, 27469), (1365, 14791), (1911, 10565), (2113, 9555), (3185, 6339)]