21980550

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1$

素因数の和:238

約数の個数: 96

約数和(自身を含む): 58567680

約数和(自身を除く): 36587130

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 29, 30, 31, 50, 58, 62, 75, 87, 93, 145, 150, 155, 163, 174, 186, 290, 310, 326, 435, 465, 489, 725, 775, 815, 870, 899, 930, 978, 1450, 1550, 1630, 1798, 2175, 2325, 2445, 2697, 4075, 4350, 4495, 4650, 4727, 4890, 5053, 5394, 8150, 8990, 9454, 10106, 12225, 13485, 14181, 15159, 22475, 23635, 24450, 25265, 26970, 28362, 30318, 44950, 47270, 50530, 67425, 70905, 75795, 118175, 126325, 134850, 141810, 146537, 151590, 236350, 252650, 293074, 354525, 378975, 439611, 709050, 732685, 757950, 879222, 1465370, 2198055, 3663425, 4396110, 7326850, 10990275, 21980550]

約数ペア:

[(1, 21980550), (2, 10990275), (3, 7326850), (5, 4396110), (6, 3663425), (10, 2198055), (15, 1465370), (25, 879222), (29, 757950), (30, 732685), (31, 709050), (50, 439611), (58, 378975), (62, 354525), (75, 293074), (87, 252650), (93, 236350), (145, 151590), (150, 146537), (155, 141810), (163, 134850), (174, 126325), (186, 118175), (290, 75795), (310, 70905), (326, 67425), (435, 50530), (465, 47270), (489, 44950), (725, 30318), (775, 28362), (815, 26970), (870, 25265), (899, 24450), (930, 23635), (978, 22475), (1450, 15159), (1550, 14181), (1630, 13485), (1798, 12225), (2175, 10106), (2325, 9454), (2445, 8990), (2697, 8150), (4075, 5394), (4350, 5053), (4495, 4890), (4650, 4727)]