320788000

素因数分解:

$2^5\times 5^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:268

約数の個数: 192

約数和(自身を含む): 880588800

約数和(自身を除く): 559800800

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 31, 32, 40, 50, 52, 62, 65, 80, 100, 104, 124, 125, 130, 155, 160, 199, 200, 208, 248, 250, 260, 310, 325, 398, 400, 403, 416, 496, 500, 520, 620, 650, 775, 796, 800, 806, 992, 995, 1000, 1040, 1240, 1300, 1550, 1592, 1612, 1625, 1990, 2000, 2015, 2080, 2480, 2587, 2600, 3100, 3184, 3224, 3250, 3875, 3980, 4000, 4030, 4960, 4975, 5174, 5200, 6169, 6200, 6368, 6448, 6500, 7750, 7960, 8060, 9950, 10075, 10348, 10400, 12338, 12400, 12896, 12935, 13000, 15500, 15920, 16120, 19900, 20150, 20696, 24676, 24800, 24875, 25870, 26000, 30845, 31000, 31840, 32240, 39800, 40300, 41392, 49352, 49750, 50375, 51740, 52000, 61690, 62000, 64480, 64675, 79600, 80197, 80600, 82784, 98704, 99500, 100750, 103480, 123380, 124000, 129350, 154225, 159200, 160394, 161200, 197408, 199000, 201500, 206960, 246760, 258700, 308450, 320788, 322400, 323375, 398000, 400985, 403000, 413920, 493520, 517400, 616900, 641576, 646750, 771125, 796000, 801970, 806000, 987040, 1034800, 1233800, 1283152, 1293500, 1542250, 1603940, 1612000, 2004925, 2069600, 2467600, 2566304, 2587000, 3084500, 3207880, 4009850, 4935200, 5174000, 6169000, 6415760, 8019700, 10024625, 10348000, 12338000, 12831520, 16039400, 20049250, 24676000, 32078800, 40098500, 64157600, 80197000, 160394000, 320788000]

約数ペア:

[(1, 320788000), (2, 160394000), (4, 80197000), (5, 64157600), (8, 40098500), (10, 32078800), (13, 24676000), (16, 20049250), (20, 16039400), (25, 12831520), (26, 12338000), (31, 10348000), (32, 10024625), (40, 8019700), (50, 6415760), (52, 6169000), (62, 5174000), (65, 4935200), (80, 4009850), (100, 3207880), (104, 3084500), (124, 2587000), (125, 2566304), (130, 2467600), (155, 2069600), (160, 2004925), (199, 1612000), (200, 1603940), (208, 1542250), (248, 1293500), (250, 1283152), (260, 1233800), (310, 1034800), (325, 987040), (398, 806000), (400, 801970), (403, 796000), (416, 771125), (496, 646750), (500, 641576), (520, 616900), (620, 517400), (650, 493520), (775, 413920), (796, 403000), (800, 400985), (806, 398000), (992, 323375), (995, 322400), (1000, 320788), (1040, 308450), (1240, 258700), (1300, 246760), (1550, 206960), (1592, 201500), (1612, 199000), (1625, 197408), (1990, 161200), (2000, 160394), (2015, 159200), (2080, 154225), (2480, 129350), (2587, 124000), (2600, 123380), (3100, 103480), (3184, 100750), (3224, 99500), (3250, 98704), (3875, 82784), (3980, 80600), (4000, 80197), (4030, 79600), (4960, 64675), (4975, 64480), (5174, 62000), (5200, 61690), (6169, 52000), (6200, 51740), (6368, 50375), (6448, 49750), (6500, 49352), (7750, 41392), (7960, 40300), (8060, 39800), (9950, 32240), (10075, 31840), (10348, 31000), (10400, 30845), (12338, 26000), (12400, 25870), (12896, 24875), (12935, 24800), (13000, 24676), (15500, 20696), (15920, 20150), (16120, 19900)]