21689920

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{421}}^1$

素因数の和:468

約数の個数: 112

約数和(自身を含む): 61740288

約数和(自身を除く): 40050368

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 32, 35, 40, 46, 56, 64, 70, 80, 92, 112, 115, 140, 160, 161, 184, 224, 230, 280, 320, 322, 368, 421, 448, 460, 560, 644, 736, 805, 842, 920, 1120, 1288, 1472, 1610, 1684, 1840, 2105, 2240, 2576, 2947, 3220, 3368, 3680, 4210, 5152, 5894, 6440, 6736, 7360, 8420, 9683, 10304, 11788, 12880, 13472, 14735, 16840, 19366, 23576, 25760, 26944, 29470, 33680, 38732, 47152, 48415, 51520, 58940, 67360, 67781, 77464, 94304, 96830, 117880, 134720, 135562, 154928, 188608, 193660, 235760, 271124, 309856, 338905, 387320, 471520, 542248, 619712, 677810, 774640, 943040, 1084496, 1355620, 1549280, 2168992, 2711240, 3098560, 4337984, 5422480, 10844960, 21689920]

約数ペア:

[(1, 21689920), (2, 10844960), (4, 5422480), (5, 4337984), (7, 3098560), (8, 2711240), (10, 2168992), (14, 1549280), (16, 1355620), (20, 1084496), (23, 943040), (28, 774640), (32, 677810), (35, 619712), (40, 542248), (46, 471520), (56, 387320), (64, 338905), (70, 309856), (80, 271124), (92, 235760), (112, 193660), (115, 188608), (140, 154928), (160, 135562), (161, 134720), (184, 117880), (224, 96830), (230, 94304), (280, 77464), (320, 67781), (322, 67360), (368, 58940), (421, 51520), (448, 48415), (460, 47152), (560, 38732), (644, 33680), (736, 29470), (805, 26944), (842, 25760), (920, 23576), (1120, 19366), (1288, 16840), (1472, 14735), (1610, 13472), (1684, 12880), (1840, 11788), (2105, 10304), (2240, 9683), (2576, 8420), (2947, 7360), (3220, 6736), (3368, 6440), (3680, 5894), (4210, 5152)]