21380064

素因数分解:

$2^5\times 3^1\times {\mathrm{23}}^2\times {\mathrm{421}}^1$

素因数の和:480

約数の個数: 72

約数和(自身を含む): 58808232

約数和(自身を除く): 37428168

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 23, 24, 32, 46, 48, 69, 92, 96, 138, 184, 276, 368, 421, 529, 552, 736, 842, 1058, 1104, 1263, 1587, 1684, 2116, 2208, 2526, 3174, 3368, 4232, 5052, 6348, 6736, 8464, 9683, 10104, 12696, 13472, 16928, 19366, 20208, 25392, 29049, 38732, 40416, 50784, 58098, 77464, 116196, 154928, 222709, 232392, 309856, 445418, 464784, 668127, 890836, 929568, 1336254, 1781672, 2672508, 3563344, 5345016, 7126688, 10690032, 21380064]

約数ペア:

[(1, 21380064), (2, 10690032), (3, 7126688), (4, 5345016), (6, 3563344), (8, 2672508), (12, 1781672), (16, 1336254), (23, 929568), (24, 890836), (32, 668127), (46, 464784), (48, 445418), (69, 309856), (92, 232392), (96, 222709), (138, 154928), (184, 116196), (276, 77464), (368, 58098), (421, 50784), (529, 40416), (552, 38732), (736, 29049), (842, 25392), (1058, 20208), (1104, 19366), (1263, 16928), (1587, 13472), (1684, 12696), (2116, 10104), (2208, 9683), (2526, 8464), (3174, 6736), (3368, 6348), (4232, 5052)]