21699020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:183

約数の個数: 96

約数和(自身を含む): 55157760

約数和(自身を除く): 33458740

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 59, 70, 71, 74, 118, 140, 142, 148, 185, 236, 259, 284, 295, 355, 370, 413, 497, 518, 590, 710, 740, 826, 994, 1036, 1180, 1295, 1420, 1652, 1988, 2065, 2183, 2485, 2590, 2627, 4130, 4189, 4366, 4970, 5180, 5254, 8260, 8378, 8732, 9940, 10508, 10915, 13135, 15281, 16756, 18389, 20945, 21830, 26270, 29323, 30562, 36778, 41890, 43660, 52540, 58646, 61124, 73556, 76405, 83780, 91945, 117292, 146615, 152810, 154993, 183890, 293230, 305620, 309986, 367780, 586460, 619972, 774965, 1084951, 1549930, 2169902, 3099860, 4339804, 5424755, 10849510, 21699020]

約数ペア:

[(1, 21699020), (2, 10849510), (4, 5424755), (5, 4339804), (7, 3099860), (10, 2169902), (14, 1549930), (20, 1084951), (28, 774965), (35, 619972), (37, 586460), (59, 367780), (70, 309986), (71, 305620), (74, 293230), (118, 183890), (140, 154993), (142, 152810), (148, 146615), (185, 117292), (236, 91945), (259, 83780), (284, 76405), (295, 73556), (355, 61124), (370, 58646), (413, 52540), (497, 43660), (518, 41890), (590, 36778), (710, 30562), (740, 29323), (826, 26270), (994, 21830), (1036, 20945), (1180, 18389), (1295, 16756), (1420, 15281), (1652, 13135), (1988, 10915), (2065, 10508), (2183, 9940), (2485, 8732), (2590, 8378), (2627, 8260), (4130, 5254), (4189, 5180), (4366, 4970)]