18986781639

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1\times {\mathrm{239}}^1\times {\mathrm{521}}^1$

素因数の和:960

約数の個数: 64

約数和(自身を含む): 29874769920

約数和(自身を除く): 10887988281

約数列:

[1, 3, 7, 21, 53, 137, 159, 239, 371, 411, 521, 717, 959, 1113, 1563, 1673, 2877, 3647, 5019, 7261, 10941, 12667, 21783, 27613, 32743, 38001, 50827, 71377, 82839, 88669, 98229, 124519, 152481, 193291, 214131, 229201, 266007, 373557, 499639, 579873, 687603, 871633, 1498917, 1735379, 2614899, 3782981, 5206137, 6599507, 11348943, 12147653, 17059103, 19798521, 26480867, 36442959, 46196549, 51177309, 79442601, 119413721, 138589647, 358241163, 904132459, 2712397377, 6328927213, 18986781639]

約数ペア:

[(1, 18986781639), (3, 6328927213), (7, 2712397377), (21, 904132459), (53, 358241163), (137, 138589647), (159, 119413721), (239, 79442601), (371, 51177309), (411, 46196549), (521, 36442959), (717, 26480867), (959, 19798521), (1113, 17059103), (1563, 12147653), (1673, 11348943), (2877, 6599507), (3647, 5206137), (5019, 3782981), (7261, 2614899), (10941, 1735379), (12667, 1498917), (21783, 871633), (27613, 687603), (32743, 579873), (38001, 499639), (50827, 373557), (71377, 266007), (82839, 229201), (88669, 214131), (98229, 193291), (124519, 152481)]