18983700

素因数分解:

$2^2\times 3^3\times 5^2\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:191

約数の個数: 144

約数和(自身を含む): 62496000

約数和(自身を除く): 43512300

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 27, 30, 36, 45, 50, 54, 60, 75, 79, 89, 90, 100, 108, 135, 150, 158, 178, 180, 225, 237, 267, 270, 300, 316, 356, 395, 445, 450, 474, 534, 540, 675, 711, 790, 801, 890, 900, 948, 1068, 1185, 1335, 1350, 1422, 1580, 1602, 1780, 1975, 2133, 2225, 2370, 2403, 2670, 2700, 2844, 3204, 3555, 3950, 4005, 4266, 4450, 4740, 4806, 5340, 5925, 6675, 7031, 7110, 7900, 8010, 8532, 8900, 9612, 10665, 11850, 12015, 13350, 14062, 14220, 16020, 17775, 20025, 21093, 21330, 23700, 24030, 26700, 28124, 35155, 35550, 40050, 42186, 42660, 48060, 53325, 60075, 63279, 70310, 71100, 80100, 84372, 105465, 106650, 120150, 126558, 140620, 175775, 189837, 210930, 213300, 240300, 253116, 316395, 351550, 379674, 421860, 527325, 632790, 703100, 759348, 949185, 1054650, 1265580, 1581975, 1898370, 2109300, 3163950, 3796740, 4745925, 6327900, 9491850, 18983700]

約数ペア:

[(1, 18983700), (2, 9491850), (3, 6327900), (4, 4745925), (5, 3796740), (6, 3163950), (9, 2109300), (10, 1898370), (12, 1581975), (15, 1265580), (18, 1054650), (20, 949185), (25, 759348), (27, 703100), (30, 632790), (36, 527325), (45, 421860), (50, 379674), (54, 351550), (60, 316395), (75, 253116), (79, 240300), (89, 213300), (90, 210930), (100, 189837), (108, 175775), (135, 140620), (150, 126558), (158, 120150), (178, 106650), (180, 105465), (225, 84372), (237, 80100), (267, 71100), (270, 70310), (300, 63279), (316, 60075), (356, 53325), (395, 48060), (445, 42660), (450, 42186), (474, 40050), (534, 35550), (540, 35155), (675, 28124), (711, 26700), (790, 24030), (801, 23700), (890, 21330), (900, 21093), (948, 20025), (1068, 17775), (1185, 16020), (1335, 14220), (1350, 14062), (1422, 13350), (1580, 12015), (1602, 11850), (1780, 10665), (1975, 9612), (2133, 8900), (2225, 8532), (2370, 8010), (2403, 7900), (2670, 7110), (2700, 7031), (2844, 6675), (3204, 5925), (3555, 5340), (3950, 4806), (4005, 4740), (4266, 4450)]