21405456

素因数分解:

$2^4\times 3^2\times {\mathrm{23}}^2\times {\mathrm{281}}^1$

素因数の和:341

約数の個数: 90

約数和(自身を含む): 62846238

約数和(自身を除く): 41440782

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 23, 24, 36, 46, 48, 69, 72, 92, 138, 144, 184, 207, 276, 281, 368, 414, 529, 552, 562, 828, 843, 1058, 1104, 1124, 1587, 1656, 1686, 2116, 2248, 2529, 3174, 3312, 3372, 4232, 4496, 4761, 5058, 6348, 6463, 6744, 8464, 9522, 10116, 12696, 12926, 13488, 19044, 19389, 20232, 25392, 25852, 38088, 38778, 40464, 51704, 58167, 76176, 77556, 103408, 116334, 148649, 155112, 232668, 297298, 310224, 445947, 465336, 594596, 891894, 930672, 1189192, 1337841, 1783788, 2378384, 2675682, 3567576, 5351364, 7135152, 10702728, 21405456]

約数ペア:

[(1, 21405456), (2, 10702728), (3, 7135152), (4, 5351364), (6, 3567576), (8, 2675682), (9, 2378384), (12, 1783788), (16, 1337841), (18, 1189192), (23, 930672), (24, 891894), (36, 594596), (46, 465336), (48, 445947), (69, 310224), (72, 297298), (92, 232668), (138, 155112), (144, 148649), (184, 116334), (207, 103408), (276, 77556), (281, 76176), (368, 58167), (414, 51704), (529, 40464), (552, 38778), (562, 38088), (828, 25852), (843, 25392), (1058, 20232), (1104, 19389), (1124, 19044), (1587, 13488), (1656, 12926), (1686, 12696), (2116, 10116), (2248, 9522), (2529, 8464), (3174, 6744), (3312, 6463), (3372, 6348), (4232, 5058), (4496, 4761)]