28421820

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{103}}^1$

素因数の和:201

約数の個数: 192

約数和(自身を含む): 103434240

約数和(自身を除く): 75012420

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 73, 84, 90, 103, 105, 108, 126, 135, 140, 146, 180, 189, 206, 210, 219, 252, 270, 292, 309, 315, 365, 378, 412, 420, 438, 511, 515, 540, 618, 630, 657, 721, 730, 756, 876, 927, 945, 1022, 1030, 1095, 1236, 1260, 1314, 1442, 1460, 1533, 1545, 1854, 1890, 1971, 2044, 2060, 2163, 2190, 2555, 2628, 2781, 2884, 3066, 3090, 3285, 3605, 3708, 3780, 3942, 4326, 4380, 4599, 4635, 5110, 5562, 6132, 6180, 6489, 6570, 7210, 7519, 7665, 7884, 8652, 9198, 9270, 9855, 10220, 10815, 11124, 12978, 13140, 13797, 13905, 14420, 15038, 15330, 18396, 18540, 19467, 19710, 21630, 22557, 22995, 25956, 27594, 27810, 30076, 30660, 32445, 37595, 38934, 39420, 43260, 45114, 45990, 52633, 55188, 55620, 64890, 67671, 68985, 75190, 77868, 90228, 91980, 97335, 105266, 112785, 129780, 135342, 137970, 150380, 157899, 194670, 203013, 210532, 225570, 263165, 270684, 275940, 315798, 338355, 389340, 406026, 451140, 473697, 526330, 631596, 676710, 789495, 812052, 947394, 1015065, 1052660, 1353420, 1421091, 1578990, 1894788, 2030130, 2368485, 2842182, 3157980, 4060260, 4736970, 5684364, 7105455, 9473940, 14210910, 28421820]

約数ペア:

[(1, 28421820), (2, 14210910), (3, 9473940), (4, 7105455), (5, 5684364), (6, 4736970), (7, 4060260), (9, 3157980), (10, 2842182), (12, 2368485), (14, 2030130), (15, 1894788), (18, 1578990), (20, 1421091), (21, 1353420), (27, 1052660), (28, 1015065), (30, 947394), (35, 812052), (36, 789495), (42, 676710), (45, 631596), (54, 526330), (60, 473697), (63, 451140), (70, 406026), (73, 389340), (84, 338355), (90, 315798), (103, 275940), (105, 270684), (108, 263165), (126, 225570), (135, 210532), (140, 203013), (146, 194670), (180, 157899), (189, 150380), (206, 137970), (210, 135342), (219, 129780), (252, 112785), (270, 105266), (292, 97335), (309, 91980), (315, 90228), (365, 77868), (378, 75190), (412, 68985), (420, 67671), (438, 64890), (511, 55620), (515, 55188), (540, 52633), (618, 45990), (630, 45114), (657, 43260), (721, 39420), (730, 38934), (756, 37595), (876, 32445), (927, 30660), (945, 30076), (1022, 27810), (1030, 27594), (1095, 25956), (1236, 22995), (1260, 22557), (1314, 21630), (1442, 19710), (1460, 19467), (1533, 18540), (1545, 18396), (1854, 15330), (1890, 15038), (1971, 14420), (2044, 13905), (2060, 13797), (2163, 13140), (2190, 12978), (2555, 11124), (2628, 10815), (2781, 10220), (2884, 9855), (3066, 9270), (3090, 9198), (3285, 8652), (3605, 7884), (3708, 7665), (3780, 7519), (3942, 7210), (4326, 6570), (4380, 6489), (4599, 6180), (4635, 6132), (5110, 5562)]