21000632056

素因数分解:

$2^3\times {\mathrm{19}}^2\times {\mathrm{43}}^1\times {\mathrm{263}}^1\times {\mathrm{643}}^1$

素因数の和:993

約数の個数: 96

約数和(自身を含む): 42752223360

約数和(自身を除く): 21751591304

約数列:

[1, 2, 4, 8, 19, 38, 43, 76, 86, 152, 172, 263, 344, 361, 526, 643, 722, 817, 1052, 1286, 1444, 1634, 2104, 2572, 2888, 3268, 4997, 5144, 6536, 9994, 11309, 12217, 15523, 19988, 22618, 24434, 27649, 31046, 39976, 45236, 48868, 55298, 62092, 90472, 94943, 97736, 110596, 124184, 169109, 189886, 214871, 221192, 232123, 338218, 379772, 429742, 464246, 525331, 676436, 759544, 859484, 928492, 1050662, 1352872, 1718968, 1856984, 2101324, 3213071, 4082549, 4202648, 6426142, 7271687, 8165098, 9981289, 12852284, 14543374, 16330196, 19962578, 25704568, 29086748, 32660392, 39925156, 58173496, 61048349, 79850312, 122096698, 138162053, 244193396, 276324106, 488386792, 552648212, 1105296424, 2625079007, 5250158014, 10500316028, 21000632056]

約数ペア:

[(1, 21000632056), (2, 10500316028), (4, 5250158014), (8, 2625079007), (19, 1105296424), (38, 552648212), (43, 488386792), (76, 276324106), (86, 244193396), (152, 138162053), (172, 122096698), (263, 79850312), (344, 61048349), (361, 58173496), (526, 39925156), (643, 32660392), (722, 29086748), (817, 25704568), (1052, 19962578), (1286, 16330196), (1444, 14543374), (1634, 12852284), (2104, 9981289), (2572, 8165098), (2888, 7271687), (3268, 6426142), (4997, 4202648), (5144, 4082549), (6536, 3213071), (9994, 2101324), (11309, 1856984), (12217, 1718968), (15523, 1352872), (19988, 1050662), (22618, 928492), (24434, 859484), (27649, 759544), (31046, 676436), (39976, 525331), (45236, 464246), (48868, 429742), (55298, 379772), (62092, 338218), (90472, 232123), (94943, 221192), (97736, 214871), (110596, 189886), (124184, 169109)]