21764440

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{577}}^1$

素因数の和:652

約数の個数: 64

約数和(自身を含む): 52436160

約数和(自身を除く): 30671720

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 41, 46, 82, 92, 115, 164, 184, 205, 230, 328, 410, 460, 577, 820, 920, 943, 1154, 1640, 1886, 2308, 2885, 3772, 4616, 4715, 5770, 7544, 9430, 11540, 13271, 18860, 23080, 23657, 26542, 37720, 47314, 53084, 66355, 94628, 106168, 118285, 132710, 189256, 236570, 265420, 473140, 530840, 544111, 946280, 1088222, 2176444, 2720555, 4352888, 5441110, 10882220, 21764440]

約数ペア:

[(1, 21764440), (2, 10882220), (4, 5441110), (5, 4352888), (8, 2720555), (10, 2176444), (20, 1088222), (23, 946280), (40, 544111), (41, 530840), (46, 473140), (82, 265420), (92, 236570), (115, 189256), (164, 132710), (184, 118285), (205, 106168), (230, 94628), (328, 66355), (410, 53084), (460, 47314), (577, 37720), (820, 26542), (920, 23657), (943, 23080), (1154, 18860), (1640, 13271), (1886, 11540), (2308, 9430), (2885, 7544), (3772, 5770), (4616, 4715)]