20765640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{419}}^1$

素因数の和:499

約数の個数: 128

約数和(自身を含む): 72576000

約数和(自身を除く): 51810360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 59, 60, 70, 84, 105, 118, 120, 140, 168, 177, 210, 236, 280, 295, 354, 413, 419, 420, 472, 590, 708, 826, 838, 840, 885, 1180, 1239, 1257, 1416, 1652, 1676, 1770, 2065, 2095, 2360, 2478, 2514, 2933, 3304, 3352, 3540, 4130, 4190, 4956, 5028, 5866, 6195, 6285, 7080, 8260, 8380, 8799, 9912, 10056, 11732, 12390, 12570, 14665, 16520, 16760, 17598, 23464, 24721, 24780, 25140, 29330, 35196, 43995, 49442, 49560, 50280, 58660, 70392, 74163, 87990, 98884, 117320, 123605, 148326, 173047, 175980, 197768, 247210, 296652, 346094, 351960, 370815, 494420, 519141, 593304, 692188, 741630, 865235, 988840, 1038282, 1384376, 1483260, 1730470, 2076564, 2595705, 2966520, 3460940, 4153128, 5191410, 6921880, 10382820, 20765640]

約数ペア:

[(1, 20765640), (2, 10382820), (3, 6921880), (4, 5191410), (5, 4153128), (6, 3460940), (7, 2966520), (8, 2595705), (10, 2076564), (12, 1730470), (14, 1483260), (15, 1384376), (20, 1038282), (21, 988840), (24, 865235), (28, 741630), (30, 692188), (35, 593304), (40, 519141), (42, 494420), (56, 370815), (59, 351960), (60, 346094), (70, 296652), (84, 247210), (105, 197768), (118, 175980), (120, 173047), (140, 148326), (168, 123605), (177, 117320), (210, 98884), (236, 87990), (280, 74163), (295, 70392), (354, 58660), (413, 50280), (419, 49560), (420, 49442), (472, 43995), (590, 35196), (708, 29330), (826, 25140), (838, 24780), (840, 24721), (885, 23464), (1180, 17598), (1239, 16760), (1257, 16520), (1416, 14665), (1652, 12570), (1676, 12390), (1770, 11732), (2065, 10056), (2095, 9912), (2360, 8799), (2478, 8380), (2514, 8260), (2933, 7080), (3304, 6285), (3352, 6195), (3540, 5866), (4130, 5028), (4190, 4956)]