20356980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{2551}}^1$

素因数の和:2589

約数の個数: 96

約数和(自身を含む): 68597760

約数和(自身を除く): 48240780

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 28, 30, 35, 38, 42, 57, 60, 70, 76, 84, 95, 105, 114, 133, 140, 190, 210, 228, 266, 285, 380, 399, 420, 532, 570, 665, 798, 1140, 1330, 1596, 1995, 2551, 2660, 3990, 5102, 7653, 7980, 10204, 12755, 15306, 17857, 25510, 30612, 35714, 38265, 48469, 51020, 53571, 71428, 76530, 89285, 96938, 107142, 145407, 153060, 178570, 193876, 214284, 242345, 267855, 290814, 339283, 357140, 484690, 535710, 581628, 678566, 727035, 969380, 1017849, 1071420, 1357132, 1454070, 1696415, 2035698, 2908140, 3392830, 4071396, 5089245, 6785660, 10178490, 20356980]

約数ペア:

[(1, 20356980), (2, 10178490), (3, 6785660), (4, 5089245), (5, 4071396), (6, 3392830), (7, 2908140), (10, 2035698), (12, 1696415), (14, 1454070), (15, 1357132), (19, 1071420), (20, 1017849), (21, 969380), (28, 727035), (30, 678566), (35, 581628), (38, 535710), (42, 484690), (57, 357140), (60, 339283), (70, 290814), (76, 267855), (84, 242345), (95, 214284), (105, 193876), (114, 178570), (133, 153060), (140, 145407), (190, 107142), (210, 96938), (228, 89285), (266, 76530), (285, 71428), (380, 53571), (399, 51020), (420, 48469), (532, 38265), (570, 35714), (665, 30612), (798, 25510), (1140, 17857), (1330, 15306), (1596, 12755), (1995, 10204), (2551, 7980), (2660, 7653), (3990, 5102)]