21401812225

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{18077}}^1$

素因数の和:18210

約数の個数: 48

約数和(自身を含む): 29052069120

約数和(自身を除く): 7650256895

約数列:

[1, 5, 23, 25, 29, 71, 115, 145, 355, 575, 667, 725, 1633, 1775, 2059, 3335, 8165, 10295, 16675, 18077, 40825, 47357, 51475, 90385, 236785, 415771, 451925, 524233, 1183925, 1283467, 2078855, 2621165, 6417335, 10394275, 12057359, 13105825, 29519741, 32086675, 37220543, 60286795, 147598705, 186102715, 301433975, 737993525, 856072489, 930513575, 4280362445, 21401812225]

約数ペア:

[(1, 21401812225), (5, 4280362445), (23, 930513575), (25, 856072489), (29, 737993525), (71, 301433975), (115, 186102715), (145, 147598705), (355, 60286795), (575, 37220543), (667, 32086675), (725, 29519741), (1633, 13105825), (1775, 12057359), (2059, 10394275), (3335, 6417335), (8165, 2621165), (10295, 2078855), (16675, 1283467), (18077, 1183925), (40825, 524233), (47357, 451925), (51475, 415771), (90385, 236785)]