21272148

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^2\times {\mathrm{1117}}^1$

素因数の和:1173

約数の個数: 54

約数和(自身を含む): 56261114

約数和(自身を除く): 34988966

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 69, 92, 138, 207, 276, 414, 529, 828, 1058, 1117, 1587, 2116, 2234, 3174, 3351, 4468, 4761, 6348, 6702, 9522, 10053, 13404, 19044, 20106, 25691, 40212, 51382, 77073, 102764, 154146, 231219, 308292, 462438, 590893, 924876, 1181786, 1772679, 2363572, 3545358, 5318037, 7090716, 10636074, 21272148]

約数ペア:

[(1, 21272148), (2, 10636074), (3, 7090716), (4, 5318037), (6, 3545358), (9, 2363572), (12, 1772679), (18, 1181786), (23, 924876), (36, 590893), (46, 462438), (69, 308292), (92, 231219), (138, 154146), (207, 102764), (276, 77073), (414, 51382), (529, 40212), (828, 25691), (1058, 20106), (1117, 19044), (1587, 13404), (2116, 10053), (2234, 9522), (3174, 6702), (3351, 6348), (4468, 4761)]