21002904

素因数分解:

$2^3\times 3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1181}}^1$

素因数の和:1225

約数の個数: 96

約数和(自身を含む): 64537200

約数和(自身を除く): 43534296

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 19, 24, 26, 36, 38, 39, 52, 57, 72, 76, 78, 104, 114, 117, 152, 156, 171, 228, 234, 247, 312, 342, 456, 468, 494, 684, 741, 936, 988, 1181, 1368, 1482, 1976, 2223, 2362, 2964, 3543, 4446, 4724, 5928, 7086, 8892, 9448, 10629, 14172, 15353, 17784, 21258, 22439, 28344, 30706, 42516, 44878, 46059, 61412, 67317, 85032, 89756, 92118, 122824, 134634, 138177, 179512, 184236, 201951, 269268, 276354, 291707, 368472, 403902, 538536, 552708, 583414, 807804, 875121, 1105416, 1166828, 1615608, 1750242, 2333656, 2625363, 3500484, 5250726, 7000968, 10501452, 21002904]

約数ペア:

[(1, 21002904), (2, 10501452), (3, 7000968), (4, 5250726), (6, 3500484), (8, 2625363), (9, 2333656), (12, 1750242), (13, 1615608), (18, 1166828), (19, 1105416), (24, 875121), (26, 807804), (36, 583414), (38, 552708), (39, 538536), (52, 403902), (57, 368472), (72, 291707), (76, 276354), (78, 269268), (104, 201951), (114, 184236), (117, 179512), (152, 138177), (156, 134634), (171, 122824), (228, 92118), (234, 89756), (247, 85032), (312, 67317), (342, 61412), (456, 46059), (468, 44878), (494, 42516), (684, 30706), (741, 28344), (936, 22439), (988, 21258), (1181, 17784), (1368, 15353), (1482, 14172), (1976, 10629), (2223, 9448), (2362, 8892), (2964, 7086), (3543, 5928), (4446, 4724)]