20857910788

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{24197}}^1$

素因数の和:24373

約数の個数: 72

約数和(自身を含む): 43524749016

約数和(自身を除く): 22666838228

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 121, 137, 143, 242, 274, 286, 484, 548, 572, 1507, 1573, 1781, 3014, 3146, 3562, 6028, 6292, 7124, 16577, 19591, 24197, 33154, 39182, 48394, 66308, 78364, 96788, 215501, 266167, 314561, 431002, 532334, 629122, 862004, 1064668, 1258244, 2927837, 3314989, 3460171, 5855674, 6629978, 6920342, 11711348, 13259956, 13840684, 36464879, 38061881, 43094857, 72929758, 76123762, 86189714, 145859516, 152247524, 172379428, 401113669, 474043427, 802227338, 948086854, 1604454676, 1896173708, 5214477697, 10428955394, 20857910788]

約数ペア:

[(1, 20857910788), (2, 10428955394), (4, 5214477697), (11, 1896173708), (13, 1604454676), (22, 948086854), (26, 802227338), (44, 474043427), (52, 401113669), (121, 172379428), (137, 152247524), (143, 145859516), (242, 86189714), (274, 76123762), (286, 72929758), (484, 43094857), (548, 38061881), (572, 36464879), (1507, 13840684), (1573, 13259956), (1781, 11711348), (3014, 6920342), (3146, 6629978), (3562, 5855674), (6028, 3460171), (6292, 3314989), (7124, 2927837), (16577, 1258244), (19591, 1064668), (24197, 862004), (33154, 629122), (39182, 532334), (48394, 431002), (66308, 314561), (78364, 266167), (96788, 215501)]