21388896

素因数分解:

$2^5\times 3^2\times {\mathrm{23}}^1\times {\mathrm{3229}}^1$

素因数の和:3268

約数の個数: 72

約数和(自身を含む): 63488880

約数和(自身を除く): 42099984

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 23, 24, 32, 36, 46, 48, 69, 72, 92, 96, 138, 144, 184, 207, 276, 288, 368, 414, 552, 736, 828, 1104, 1656, 2208, 3229, 3312, 6458, 6624, 9687, 12916, 19374, 25832, 29061, 38748, 51664, 58122, 74267, 77496, 103328, 116244, 148534, 154992, 222801, 232488, 297068, 309984, 445602, 464976, 594136, 668403, 891204, 929952, 1188272, 1336806, 1782408, 2376544, 2673612, 3564816, 5347224, 7129632, 10694448, 21388896]

約数ペア:

[(1, 21388896), (2, 10694448), (3, 7129632), (4, 5347224), (6, 3564816), (8, 2673612), (9, 2376544), (12, 1782408), (16, 1336806), (18, 1188272), (23, 929952), (24, 891204), (32, 668403), (36, 594136), (46, 464976), (48, 445602), (69, 309984), (72, 297068), (92, 232488), (96, 222801), (138, 154992), (144, 148534), (184, 116244), (207, 103328), (276, 77496), (288, 74267), (368, 58122), (414, 51664), (552, 38748), (736, 29061), (828, 25832), (1104, 19374), (1656, 12916), (2208, 9687), (3229, 6624), (3312, 6458)]