20805094071

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{43}}^2\times {\mathrm{251}}^1\times {\mathrm{293}}^1$

素因数の和:653

約数の個数: 72

約数和(自身を含む): 32818168656

約数和(自身を除く): 12013074585

約数列:

[1, 3, 9, 17, 43, 51, 129, 153, 251, 293, 387, 731, 753, 879, 1849, 2193, 2259, 2637, 4267, 4981, 5547, 6579, 10793, 12599, 12801, 14943, 16641, 31433, 32379, 37797, 38403, 44829, 73543, 94299, 97137, 113391, 183481, 214183, 220629, 282897, 464099, 541757, 550443, 642549, 661887, 1250231, 1392297, 1625271, 1651329, 1927647, 3162349, 3750693, 4176891, 4875813, 7889683, 9209869, 9487047, 11252079, 23669049, 27629607, 28461141, 53759933, 71007147, 82888821, 135981007, 161279799, 407943021, 483839397, 1223829063, 2311677119, 6935031357, 20805094071]

約数ペア:

[(1, 20805094071), (3, 6935031357), (9, 2311677119), (17, 1223829063), (43, 483839397), (51, 407943021), (129, 161279799), (153, 135981007), (251, 82888821), (293, 71007147), (387, 53759933), (731, 28461141), (753, 27629607), (879, 23669049), (1849, 11252079), (2193, 9487047), (2259, 9209869), (2637, 7889683), (4267, 4875813), (4981, 4176891), (5547, 3750693), (6579, 3162349), (10793, 1927647), (12599, 1651329), (12801, 1625271), (14943, 1392297), (16641, 1250231), (31433, 661887), (32379, 642549), (37797, 550443), (38403, 541757), (44829, 464099), (73543, 282897), (94299, 220629), (97137, 214183), (113391, 183481)]