21000228240

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{373}}^1\times {\mathrm{234587}}^1$

素因数の和:234976

約数の個数: 80

約数和(自身を含む): 65275518528

約数和(自身を除く): 44275290288

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 373, 746, 1119, 1492, 1865, 2238, 2984, 3730, 4476, 5595, 5968, 7460, 8952, 11190, 14920, 17904, 22380, 29840, 44760, 89520, 234587, 469174, 703761, 938348, 1172935, 1407522, 1876696, 2345870, 2815044, 3518805, 3753392, 4691740, 5630088, 7037610, 9383480, 11260176, 14075220, 18766960, 28150440, 56300880, 87500951, 175001902, 262502853, 350003804, 437504755, 525005706, 700007608, 875009510, 1050011412, 1312514265, 1400015216, 1750019020, 2100022824, 2625028530, 3500038040, 4200045648, 5250057060, 7000076080, 10500114120, 21000228240]

約数ペア:

[(1, 21000228240), (2, 10500114120), (3, 7000076080), (4, 5250057060), (5, 4200045648), (6, 3500038040), (8, 2625028530), (10, 2100022824), (12, 1750019020), (15, 1400015216), (16, 1312514265), (20, 1050011412), (24, 875009510), (30, 700007608), (40, 525005706), (48, 437504755), (60, 350003804), (80, 262502853), (120, 175001902), (240, 87500951), (373, 56300880), (746, 28150440), (1119, 18766960), (1492, 14075220), (1865, 11260176), (2238, 9383480), (2984, 7037610), (3730, 5630088), (4476, 4691740), (5595, 3753392), (5968, 3518805), (7460, 2815044), (8952, 2345870), (11190, 1876696), (14920, 1407522), (17904, 1172935), (22380, 938348), (29840, 703761), (44760, 469174), (89520, 234587)]