217529720

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{65521}}^1$

素因数の和:65615

約数の個数: 32

約数和(自身を含む): 495346320

約数和(自身を除く): 277816600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 65521, 131042, 262084, 327605, 524168, 655210, 1310420, 2620840, 5438243, 10876486, 21752972, 27191215, 43505944, 54382430, 108764860, 217529720]

約数ペア:

[(1, 217529720), (2, 108764860), (4, 54382430), (5, 43505944), (8, 27191215), (10, 21752972), (20, 10876486), (40, 5438243), (83, 2620840), (166, 1310420), (332, 655210), (415, 524168), (664, 327605), (830, 262084), (1660, 131042), (3320, 65521)]