39940360

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{16369}}^1$

素因数の和:16441

約数の個数: 32

約数和(自身を含む): 91344600

約数和(自身を除く): 51404240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 16369, 32738, 65476, 81845, 130952, 163690, 327380, 654760, 998509, 1997018, 3994036, 4992545, 7988072, 9985090, 19970180, 39940360]

約数ペア:

[(1, 39940360), (2, 19970180), (4, 9985090), (5, 7988072), (8, 4992545), (10, 3994036), (20, 1997018), (40, 998509), (61, 654760), (122, 327380), (244, 163690), (305, 130952), (488, 81845), (610, 65476), (1220, 32738), (2440, 16369)]