81809700

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{163}}^1\times {\mathrm{239}}^1$

素因数の和:426

約数の個数: 144

約数和(自身を含む): 273315840

約数和(自身を除く): 191506140

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 140, 150, 163, 175, 210, 239, 300, 326, 350, 420, 478, 489, 525, 652, 700, 717, 815, 956, 978, 1050, 1141, 1195, 1434, 1630, 1673, 1956, 2100, 2282, 2390, 2445, 2868, 3260, 3346, 3423, 3585, 4075, 4564, 4780, 4890, 5019, 5705, 5975, 6692, 6846, 7170, 8150, 8365, 9780, 10038, 11410, 11950, 12225, 13692, 14340, 16300, 16730, 17115, 17925, 20076, 22820, 23900, 24450, 25095, 28525, 33460, 34230, 35850, 38957, 41825, 48900, 50190, 57050, 68460, 71700, 77914, 83650, 85575, 100380, 114100, 116871, 125475, 155828, 167300, 171150, 194785, 233742, 250950, 272699, 342300, 389570, 467484, 501900, 545398, 584355, 779140, 818097, 973925, 1090796, 1168710, 1363495, 1636194, 1947850, 2337420, 2726990, 2921775, 3272388, 3895700, 4090485, 5453980, 5843550, 6817475, 8180970, 11687100, 13634950, 16361940, 20452425, 27269900, 40904850, 81809700]

約数ペア:

[(1, 81809700), (2, 40904850), (3, 27269900), (4, 20452425), (5, 16361940), (6, 13634950), (7, 11687100), (10, 8180970), (12, 6817475), (14, 5843550), (15, 5453980), (20, 4090485), (21, 3895700), (25, 3272388), (28, 2921775), (30, 2726990), (35, 2337420), (42, 1947850), (50, 1636194), (60, 1363495), (70, 1168710), (75, 1090796), (84, 973925), (100, 818097), (105, 779140), (140, 584355), (150, 545398), (163, 501900), (175, 467484), (210, 389570), (239, 342300), (300, 272699), (326, 250950), (350, 233742), (420, 194785), (478, 171150), (489, 167300), (525, 155828), (652, 125475), (700, 116871), (717, 114100), (815, 100380), (956, 85575), (978, 83650), (1050, 77914), (1141, 71700), (1195, 68460), (1434, 57050), (1630, 50190), (1673, 48900), (1956, 41825), (2100, 38957), (2282, 35850), (2390, 34230), (2445, 33460), (2868, 28525), (3260, 25095), (3346, 24450), (3423, 23900), (3585, 22820), (4075, 20076), (4564, 17925), (4780, 17115), (4890, 16730), (5019, 16300), (5705, 14340), (5975, 13692), (6692, 12225), (6846, 11950), (7170, 11410), (8150, 10038), (8365, 9780)]