257158920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^2\times {\mathrm{61}}^1$

素因数の和:180

約数の個数: 192

約数和(自身を含む): 845035200

約数和(自身を除く): 587876280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 43, 57, 60, 61, 76, 86, 95, 114, 120, 122, 129, 152, 172, 183, 190, 215, 228, 244, 258, 285, 305, 344, 366, 380, 430, 456, 488, 516, 570, 610, 645, 732, 760, 817, 860, 915, 1032, 1140, 1159, 1220, 1290, 1464, 1634, 1720, 1830, 1849, 2280, 2318, 2440, 2451, 2580, 2623, 3268, 3477, 3660, 3698, 4085, 4636, 4902, 5160, 5246, 5547, 5795, 6536, 6954, 7320, 7396, 7869, 8170, 9245, 9272, 9804, 10492, 11094, 11590, 12255, 13115, 13908, 14792, 15738, 16340, 17385, 18490, 19608, 20984, 22188, 23180, 24510, 26230, 27735, 27816, 31476, 32680, 34770, 35131, 36980, 39345, 44376, 46360, 49020, 49837, 52460, 55470, 62952, 69540, 70262, 73960, 78690, 98040, 99674, 104920, 105393, 110940, 112789, 139080, 140524, 149511, 157380, 175655, 199348, 210786, 221880, 225578, 249185, 281048, 299022, 314760, 338367, 351310, 398696, 421572, 451156, 498370, 526965, 563945, 598044, 676734, 702620, 747555, 843144, 902312, 996740, 1053930, 1127890, 1196088, 1353468, 1405240, 1495110, 1691835, 1993480, 2107860, 2142991, 2255780, 2706936, 2990220, 3383670, 4215720, 4285982, 4511560, 5980440, 6428973, 6767340, 8571964, 10714955, 12857946, 13534680, 17143928, 21429910, 25715892, 32144865, 42859820, 51431784, 64289730, 85719640, 128579460, 257158920]

約数ペア:

[(1, 257158920), (2, 128579460), (3, 85719640), (4, 64289730), (5, 51431784), (6, 42859820), (8, 32144865), (10, 25715892), (12, 21429910), (15, 17143928), (19, 13534680), (20, 12857946), (24, 10714955), (30, 8571964), (38, 6767340), (40, 6428973), (43, 5980440), (57, 4511560), (60, 4285982), (61, 4215720), (76, 3383670), (86, 2990220), (95, 2706936), (114, 2255780), (120, 2142991), (122, 2107860), (129, 1993480), (152, 1691835), (172, 1495110), (183, 1405240), (190, 1353468), (215, 1196088), (228, 1127890), (244, 1053930), (258, 996740), (285, 902312), (305, 843144), (344, 747555), (366, 702620), (380, 676734), (430, 598044), (456, 563945), (488, 526965), (516, 498370), (570, 451156), (610, 421572), (645, 398696), (732, 351310), (760, 338367), (817, 314760), (860, 299022), (915, 281048), (1032, 249185), (1140, 225578), (1159, 221880), (1220, 210786), (1290, 199348), (1464, 175655), (1634, 157380), (1720, 149511), (1830, 140524), (1849, 139080), (2280, 112789), (2318, 110940), (2440, 105393), (2451, 104920), (2580, 99674), (2623, 98040), (3268, 78690), (3477, 73960), (3660, 70262), (3698, 69540), (4085, 62952), (4636, 55470), (4902, 52460), (5160, 49837), (5246, 49020), (5547, 46360), (5795, 44376), (6536, 39345), (6954, 36980), (7320, 35131), (7396, 34770), (7869, 32680), (8170, 31476), (9245, 27816), (9272, 27735), (9804, 26230), (10492, 24510), (11094, 23180), (11590, 22188), (12255, 20984), (13115, 19608), (13908, 18490), (14792, 17385), (15738, 16340)]