21177172

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{443}}^1$

素因数の和:520

約数の個数: 48

約数和(自身を含む): 42517440

約数和(自身を除く): 21340268

約数列:

[1, 2, 4, 17, 19, 34, 37, 38, 68, 74, 76, 148, 323, 443, 629, 646, 703, 886, 1258, 1292, 1406, 1772, 2516, 2812, 7531, 8417, 11951, 15062, 16391, 16834, 23902, 30124, 32782, 33668, 47804, 65564, 143089, 278647, 286178, 311429, 557294, 572356, 622858, 1114588, 1245716, 5294293, 10588586, 21177172]

約数ペア:

[(1, 21177172), (2, 10588586), (4, 5294293), (17, 1245716), (19, 1114588), (34, 622858), (37, 572356), (38, 557294), (68, 311429), (74, 286178), (76, 278647), (148, 143089), (323, 65564), (443, 47804), (629, 33668), (646, 32782), (703, 30124), (886, 23902), (1258, 16834), (1292, 16391), (1406, 15062), (1772, 11951), (2516, 8417), (2812, 7531)]