18935640

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{197}}^1$

素因数の和:306

約数の個数: 128

約数和(自身を含む): 64152000

約数和(自身を除く): 45216360

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 89, 90, 108, 120, 135, 178, 180, 197, 216, 267, 270, 356, 360, 394, 445, 534, 540, 591, 712, 788, 801, 890, 985, 1068, 1080, 1182, 1335, 1576, 1602, 1773, 1780, 1970, 2136, 2364, 2403, 2670, 2955, 3204, 3546, 3560, 3940, 4005, 4728, 4806, 5319, 5340, 5910, 6408, 7092, 7880, 8010, 8865, 9612, 10638, 10680, 11820, 12015, 14184, 16020, 17533, 17730, 19224, 21276, 23640, 24030, 26595, 32040, 35066, 35460, 42552, 48060, 52599, 53190, 70132, 70920, 87665, 96120, 105198, 106380, 140264, 157797, 175330, 210396, 212760, 262995, 315594, 350660, 420792, 473391, 525990, 631188, 701320, 788985, 946782, 1051980, 1262376, 1577970, 1893564, 2103960, 2366955, 3155940, 3787128, 4733910, 6311880, 9467820, 18935640]

約数ペア:

[(1, 18935640), (2, 9467820), (3, 6311880), (4, 4733910), (5, 3787128), (6, 3155940), (8, 2366955), (9, 2103960), (10, 1893564), (12, 1577970), (15, 1262376), (18, 1051980), (20, 946782), (24, 788985), (27, 701320), (30, 631188), (36, 525990), (40, 473391), (45, 420792), (54, 350660), (60, 315594), (72, 262995), (89, 212760), (90, 210396), (108, 175330), (120, 157797), (135, 140264), (178, 106380), (180, 105198), (197, 96120), (216, 87665), (267, 70920), (270, 70132), (356, 53190), (360, 52599), (394, 48060), (445, 42552), (534, 35460), (540, 35066), (591, 32040), (712, 26595), (788, 24030), (801, 23640), (890, 21276), (985, 19224), (1068, 17730), (1080, 17533), (1182, 16020), (1335, 14184), (1576, 12015), (1602, 11820), (1773, 10680), (1780, 10638), (1970, 9612), (2136, 8865), (2364, 8010), (2403, 7880), (2670, 7092), (2955, 6408), (3204, 5910), (3546, 5340), (3560, 5319), (3940, 4806), (4005, 4728)]