21682920

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{311}}^1$

素因数の和:415

約数の個数: 128

約数和(自身を含む): 75479040

約数和(自身を除く): 53796120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 83, 84, 105, 120, 140, 166, 168, 210, 249, 280, 311, 332, 415, 420, 498, 581, 622, 664, 830, 840, 933, 996, 1162, 1244, 1245, 1555, 1660, 1743, 1866, 1992, 2177, 2324, 2488, 2490, 2905, 3110, 3320, 3486, 3732, 4354, 4648, 4665, 4980, 5810, 6220, 6531, 6972, 7464, 8708, 8715, 9330, 9960, 10885, 11620, 12440, 13062, 13944, 17416, 17430, 18660, 21770, 23240, 25813, 26124, 32655, 34860, 37320, 43540, 51626, 52248, 65310, 69720, 77439, 87080, 103252, 129065, 130620, 154878, 180691, 206504, 258130, 261240, 309756, 361382, 387195, 516260, 542073, 619512, 722764, 774390, 903455, 1032520, 1084146, 1445528, 1548780, 1806910, 2168292, 2710365, 3097560, 3613820, 4336584, 5420730, 7227640, 10841460, 21682920]

約数ペア:

[(1, 21682920), (2, 10841460), (3, 7227640), (4, 5420730), (5, 4336584), (6, 3613820), (7, 3097560), (8, 2710365), (10, 2168292), (12, 1806910), (14, 1548780), (15, 1445528), (20, 1084146), (21, 1032520), (24, 903455), (28, 774390), (30, 722764), (35, 619512), (40, 542073), (42, 516260), (56, 387195), (60, 361382), (70, 309756), (83, 261240), (84, 258130), (105, 206504), (120, 180691), (140, 154878), (166, 130620), (168, 129065), (210, 103252), (249, 87080), (280, 77439), (311, 69720), (332, 65310), (415, 52248), (420, 51626), (498, 43540), (581, 37320), (622, 34860), (664, 32655), (830, 26124), (840, 25813), (933, 23240), (996, 21770), (1162, 18660), (1244, 17430), (1245, 17416), (1555, 13944), (1660, 13062), (1743, 12440), (1866, 11620), (1992, 10885), (2177, 9960), (2324, 9330), (2488, 8715), (2490, 8708), (2905, 7464), (3110, 6972), (3320, 6531), (3486, 6220), (3732, 5810), (4354, 4980), (4648, 4665)]