13885780

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{269}}^1$

素因数の和:396

約数の個数: 48

約数和(自身を含む): 30618000

約数和(自身を除く): 16732220

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 89, 116, 145, 178, 269, 290, 356, 445, 538, 580, 890, 1076, 1345, 1780, 2581, 2690, 5162, 5380, 7801, 10324, 12905, 15602, 23941, 25810, 31204, 39005, 47882, 51620, 78010, 95764, 119705, 156020, 239410, 478820, 694289, 1388578, 2777156, 3471445, 6942890, 13885780]

約数ペア:

[(1, 13885780), (2, 6942890), (4, 3471445), (5, 2777156), (10, 1388578), (20, 694289), (29, 478820), (58, 239410), (89, 156020), (116, 119705), (145, 95764), (178, 78010), (269, 51620), (290, 47882), (356, 39005), (445, 31204), (538, 25810), (580, 23941), (890, 15602), (1076, 12905), (1345, 10324), (1780, 7801), (2581, 5380), (2690, 5162)]