20217963320

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{171863}}^1$

素因数の和:172064

約数の個数: 64

約数和(自身を含む): 48445024320

約数和(自身を除く): 28227061000

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 173, 340, 346, 680, 692, 865, 1384, 1730, 2941, 3460, 5882, 6920, 11764, 14705, 23528, 29410, 58820, 117640, 171863, 343726, 687452, 859315, 1374904, 1718630, 2921671, 3437260, 5843342, 6874520, 11686684, 14608355, 23373368, 29216710, 29732299, 58433420, 59464598, 116866840, 118929196, 148661495, 237858392, 297322990, 505449083, 594645980, 1010898166, 1189291960, 2021796332, 2527245415, 4043592664, 5054490830, 10108981660, 20217963320]

約数ペア:

[(1, 20217963320), (2, 10108981660), (4, 5054490830), (5, 4043592664), (8, 2527245415), (10, 2021796332), (17, 1189291960), (20, 1010898166), (34, 594645980), (40, 505449083), (68, 297322990), (85, 237858392), (136, 148661495), (170, 118929196), (173, 116866840), (340, 59464598), (346, 58433420), (680, 29732299), (692, 29216710), (865, 23373368), (1384, 14608355), (1730, 11686684), (2941, 6874520), (3460, 5843342), (5882, 3437260), (6920, 2921671), (11764, 1718630), (14705, 1374904), (23528, 859315), (29410, 687452), (58820, 343726), (117640, 171863)]