21000514864

素因数分解:

$2^4\times 7^2\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{7789}}^1$

素因数の和:8011

約数の個数: 120

約数和(自身を含む): 50104345200

約数和(自身を除く): 29103830336

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 49, 56, 76, 98, 112, 133, 152, 181, 196, 266, 304, 362, 392, 532, 724, 784, 931, 1064, 1267, 1448, 1862, 2128, 2534, 2896, 3439, 3724, 5068, 6878, 7448, 7789, 8869, 10136, 13756, 14896, 15578, 17738, 20272, 24073, 27512, 31156, 35476, 48146, 54523, 55024, 62312, 70952, 96292, 109046, 124624, 141904, 147991, 168511, 192584, 218092, 295982, 337022, 381661, 385168, 436184, 591964, 674044, 763322, 872368, 1035937, 1183928, 1348088, 1409809, 1526644, 2071874, 2367856, 2696176, 2819618, 3053288, 4143748, 5639236, 6106576, 7251559, 8287496, 9868663, 11278472, 14503118, 16574992, 19737326, 22556944, 26786371, 29006236, 39474652, 53572742, 58012472, 69080641, 78949304, 107145484, 116024944, 138161282, 157898608, 187504597, 214290968, 276322564, 375009194, 428581936, 552645128, 750018388, 1105290256, 1312532179, 1500036776, 2625064358, 3000073552, 5250128716, 10500257432, 21000514864]

約数ペア:

[(1, 21000514864), (2, 10500257432), (4, 5250128716), (7, 3000073552), (8, 2625064358), (14, 1500036776), (16, 1312532179), (19, 1105290256), (28, 750018388), (38, 552645128), (49, 428581936), (56, 375009194), (76, 276322564), (98, 214290968), (112, 187504597), (133, 157898608), (152, 138161282), (181, 116024944), (196, 107145484), (266, 78949304), (304, 69080641), (362, 58012472), (392, 53572742), (532, 39474652), (724, 29006236), (784, 26786371), (931, 22556944), (1064, 19737326), (1267, 16574992), (1448, 14503118), (1862, 11278472), (2128, 9868663), (2534, 8287496), (2896, 7251559), (3439, 6106576), (3724, 5639236), (5068, 4143748), (6878, 3053288), (7448, 2819618), (7789, 2696176), (8869, 2367856), (10136, 2071874), (13756, 1526644), (14896, 1409809), (15578, 1348088), (17738, 1183928), (20272, 1035937), (24073, 872368), (27512, 763322), (31156, 674044), (35476, 591964), (48146, 436184), (54523, 385168), (55024, 381661), (62312, 337022), (70952, 295982), (96292, 218092), (109046, 192584), (124624, 168511), (141904, 147991)]