20104560

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{3989}}^1$

素因数の和:4015

約数の個数: 120

約数和(自身を含む): 77182560

約数和(自身を除く): 57078000

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 420, 504, 560, 630, 720, 840, 1008, 1260, 1680, 2520, 3989, 5040, 7978, 11967, 15956, 19945, 23934, 27923, 31912, 35901, 39890, 47868, 55846, 59835, 63824, 71802, 79780, 83769, 95736, 111692, 119670, 139615, 143604, 159560, 167538, 179505, 191472, 223384, 239340, 251307, 279230, 287208, 319120, 335076, 359010, 418845, 446768, 478680, 502614, 558460, 574416, 670152, 718020, 837690, 957360, 1005228, 1116920, 1256535, 1340304, 1436040, 1675380, 2010456, 2233840, 2513070, 2872080, 3350760, 4020912, 5026140, 6701520, 10052280, 20104560]

約数ペア:

[(1, 20104560), (2, 10052280), (3, 6701520), (4, 5026140), (5, 4020912), (6, 3350760), (7, 2872080), (8, 2513070), (9, 2233840), (10, 2010456), (12, 1675380), (14, 1436040), (15, 1340304), (16, 1256535), (18, 1116920), (20, 1005228), (21, 957360), (24, 837690), (28, 718020), (30, 670152), (35, 574416), (36, 558460), (40, 502614), (42, 478680), (45, 446768), (48, 418845), (56, 359010), (60, 335076), (63, 319120), (70, 287208), (72, 279230), (80, 251307), (84, 239340), (90, 223384), (105, 191472), (112, 179505), (120, 167538), (126, 159560), (140, 143604), (144, 139615), (168, 119670), (180, 111692), (210, 95736), (240, 83769), (252, 79780), (280, 71802), (315, 63824), (336, 59835), (360, 55846), (420, 47868), (504, 39890), (560, 35901), (630, 31912), (720, 27923), (840, 23934), (1008, 19945), (1260, 15956), (1680, 11967), (2520, 7978), (3989, 5040)]