20443920

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{283}}^1$

素因数の和:349

約数の個数: 160

約数和(自身を含む): 74376192

約数和(自身を除く): 53932272

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 43, 48, 56, 60, 70, 80, 84, 86, 105, 112, 120, 129, 140, 168, 172, 210, 215, 240, 258, 280, 283, 301, 336, 344, 420, 430, 516, 560, 566, 602, 645, 688, 840, 849, 860, 903, 1032, 1132, 1204, 1290, 1415, 1505, 1680, 1698, 1720, 1806, 1981, 2064, 2264, 2408, 2580, 2830, 3010, 3396, 3440, 3612, 3962, 4245, 4515, 4528, 4816, 5160, 5660, 5943, 6020, 6792, 7224, 7924, 8490, 9030, 9905, 10320, 11320, 11886, 12040, 12169, 13584, 14448, 15848, 16980, 18060, 19810, 22640, 23772, 24080, 24338, 29715, 31696, 33960, 36120, 36507, 39620, 47544, 48676, 59430, 60845, 67920, 72240, 73014, 79240, 85183, 95088, 97352, 118860, 121690, 146028, 158480, 170366, 182535, 194704, 237720, 243380, 255549, 292056, 340732, 365070, 425915, 475440, 486760, 511098, 584112, 681464, 730140, 851830, 973520, 1022196, 1277745, 1362928, 1460280, 1703660, 2044392, 2555490, 2920560, 3407320, 4088784, 5110980, 6814640, 10221960, 20443920]

約数ペア:

[(1, 20443920), (2, 10221960), (3, 6814640), (4, 5110980), (5, 4088784), (6, 3407320), (7, 2920560), (8, 2555490), (10, 2044392), (12, 1703660), (14, 1460280), (15, 1362928), (16, 1277745), (20, 1022196), (21, 973520), (24, 851830), (28, 730140), (30, 681464), (35, 584112), (40, 511098), (42, 486760), (43, 475440), (48, 425915), (56, 365070), (60, 340732), (70, 292056), (80, 255549), (84, 243380), (86, 237720), (105, 194704), (112, 182535), (120, 170366), (129, 158480), (140, 146028), (168, 121690), (172, 118860), (210, 97352), (215, 95088), (240, 85183), (258, 79240), (280, 73014), (283, 72240), (301, 67920), (336, 60845), (344, 59430), (420, 48676), (430, 47544), (516, 39620), (560, 36507), (566, 36120), (602, 33960), (645, 31696), (688, 29715), (840, 24338), (849, 24080), (860, 23772), (903, 22640), (1032, 19810), (1132, 18060), (1204, 16980), (1290, 15848), (1415, 14448), (1505, 13584), (1680, 12169), (1698, 12040), (1720, 11886), (1806, 11320), (1981, 10320), (2064, 9905), (2264, 9030), (2408, 8490), (2580, 7924), (2830, 7224), (3010, 6792), (3396, 6020), (3440, 5943), (3612, 5660), (3962, 5160), (4245, 4816), (4515, 4528)]