217390280

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{65479}}^1$

素因数の和:65573

約数の個数: 32

約数和(自身を含む): 495028800

約数和(自身を除く): 277638520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 65479, 130958, 261916, 327395, 523832, 654790, 1309580, 2619160, 5434757, 10869514, 21739028, 27173785, 43478056, 54347570, 108695140, 217390280]

約数ペア:

[(1, 217390280), (2, 108695140), (4, 54347570), (5, 43478056), (8, 27173785), (10, 21739028), (20, 10869514), (40, 5434757), (83, 2619160), (166, 1309580), (332, 654790), (415, 523832), (664, 327395), (830, 261916), (1660, 130958), (3320, 65479)]