20050804816

素因数分解:

$2^4\times 7^1\times {\mathrm{53}}^1\times {\mathrm{97}}^2\times {\mathrm{359}}^1$

素因数の和:621

約数の個数: 120

約数和(自身を含む): 45834387840

約数和(自身を除く): 25783583024

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 53, 56, 97, 106, 112, 194, 212, 359, 371, 388, 424, 679, 718, 742, 776, 848, 1358, 1436, 1484, 1552, 2513, 2716, 2872, 2968, 5026, 5141, 5432, 5744, 5936, 9409, 10052, 10282, 10864, 18818, 19027, 20104, 20564, 34823, 35987, 37636, 38054, 40208, 41128, 65863, 69646, 71974, 75272, 76108, 82256, 131726, 133189, 139292, 143948, 150544, 152216, 243761, 263452, 266378, 278584, 287896, 304432, 487522, 498677, 526904, 532756, 557168, 575792, 975044, 997354, 1053808, 1065512, 1845619, 1950088, 1994708, 2131024, 3377831, 3490739, 3691238, 3900176, 3989416, 6755662, 6981478, 7382476, 7978832, 12919333, 13511324, 13962956, 14764952, 23644817, 25838666, 27022648, 27925912, 29529904, 47289634, 51677332, 54045296, 55851824, 94579268, 103354664, 179025043, 189158536, 206709328, 358050086, 378317072, 716100172, 1253175301, 1432200344, 2506350602, 2864400688, 5012701204, 10025402408, 20050804816]

約数ペア:

[(1, 20050804816), (2, 10025402408), (4, 5012701204), (7, 2864400688), (8, 2506350602), (14, 1432200344), (16, 1253175301), (28, 716100172), (53, 378317072), (56, 358050086), (97, 206709328), (106, 189158536), (112, 179025043), (194, 103354664), (212, 94579268), (359, 55851824), (371, 54045296), (388, 51677332), (424, 47289634), (679, 29529904), (718, 27925912), (742, 27022648), (776, 25838666), (848, 23644817), (1358, 14764952), (1436, 13962956), (1484, 13511324), (1552, 12919333), (2513, 7978832), (2716, 7382476), (2872, 6981478), (2968, 6755662), (5026, 3989416), (5141, 3900176), (5432, 3691238), (5744, 3490739), (5936, 3377831), (9409, 2131024), (10052, 1994708), (10282, 1950088), (10864, 1845619), (18818, 1065512), (19027, 1053808), (20104, 997354), (20564, 975044), (34823, 575792), (35987, 557168), (37636, 532756), (38054, 526904), (40208, 498677), (41128, 487522), (65863, 304432), (69646, 287896), (71974, 278584), (75272, 266378), (76108, 263452), (82256, 243761), (131726, 152216), (133189, 150544), (139292, 143948)]