21046635

素因数分解:

$3^4\times 5^1\times {\mathrm{157}}^1\times {\mathrm{331}}^1$

素因数の和:505

約数の個数: 40

約数和(自身を含む): 38083056

約数和(自身を除く): 17036421

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 157, 331, 405, 471, 785, 993, 1413, 1655, 2355, 2979, 4239, 4965, 7065, 8937, 12717, 14895, 21195, 26811, 44685, 51967, 63585, 134055, 155901, 259835, 467703, 779505, 1403109, 2338515, 4209327, 7015545, 21046635]

約数ペア:

[(1, 21046635), (3, 7015545), (5, 4209327), (9, 2338515), (15, 1403109), (27, 779505), (45, 467703), (81, 259835), (135, 155901), (157, 134055), (331, 63585), (405, 51967), (471, 44685), (785, 26811), (993, 21195), (1413, 14895), (1655, 12717), (2355, 8937), (2979, 7065), (4239, 4965)]