18991200

素因数分解:

$2^5\times 3^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{193}}^1$

素因数の和:257

約数の個数: 144

約数和(自身を含む): 63652176

約数和(自身を除く): 44660976

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 32, 40, 41, 48, 50, 60, 75, 80, 82, 96, 100, 120, 123, 150, 160, 164, 193, 200, 205, 240, 246, 300, 328, 386, 400, 410, 480, 492, 579, 600, 615, 656, 772, 800, 820, 965, 984, 1025, 1158, 1200, 1230, 1312, 1544, 1640, 1930, 1968, 2050, 2316, 2400, 2460, 2895, 3075, 3088, 3280, 3860, 3936, 4100, 4632, 4825, 4920, 5790, 6150, 6176, 6560, 7720, 7913, 8200, 9264, 9650, 9840, 11580, 12300, 14475, 15440, 15826, 16400, 18528, 19300, 19680, 23160, 23739, 24600, 28950, 30880, 31652, 32800, 38600, 39565, 46320, 47478, 49200, 57900, 63304, 77200, 79130, 92640, 94956, 98400, 115800, 118695, 126608, 154400, 158260, 189912, 197825, 231600, 237390, 253216, 316520, 379824, 395650, 463200, 474780, 593475, 633040, 759648, 791300, 949560, 1186950, 1266080, 1582600, 1899120, 2373900, 3165200, 3798240, 4747800, 6330400, 9495600, 18991200]

約数ペア:

[(1, 18991200), (2, 9495600), (3, 6330400), (4, 4747800), (5, 3798240), (6, 3165200), (8, 2373900), (10, 1899120), (12, 1582600), (15, 1266080), (16, 1186950), (20, 949560), (24, 791300), (25, 759648), (30, 633040), (32, 593475), (40, 474780), (41, 463200), (48, 395650), (50, 379824), (60, 316520), (75, 253216), (80, 237390), (82, 231600), (96, 197825), (100, 189912), (120, 158260), (123, 154400), (150, 126608), (160, 118695), (164, 115800), (193, 98400), (200, 94956), (205, 92640), (240, 79130), (246, 77200), (300, 63304), (328, 57900), (386, 49200), (400, 47478), (410, 46320), (480, 39565), (492, 38600), (579, 32800), (600, 31652), (615, 30880), (656, 28950), (772, 24600), (800, 23739), (820, 23160), (965, 19680), (984, 19300), (1025, 18528), (1158, 16400), (1200, 15826), (1230, 15440), (1312, 14475), (1544, 12300), (1640, 11580), (1930, 9840), (1968, 9650), (2050, 9264), (2316, 8200), (2400, 7913), (2460, 7720), (2895, 6560), (3075, 6176), (3088, 6150), (3280, 5790), (3860, 4920), (3936, 4825), (4100, 4632)]