278432080

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{311}}^1$

素因数の和:393

約数の個数: 120

約数和(自身を含む): 707526144

約数和(自身を除く): 429094064

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 38, 40, 62, 76, 80, 95, 124, 152, 155, 190, 248, 304, 310, 311, 361, 380, 496, 589, 620, 622, 722, 760, 1178, 1240, 1244, 1444, 1520, 1555, 1805, 2356, 2480, 2488, 2888, 2945, 3110, 3610, 4712, 4976, 5776, 5890, 5909, 6220, 7220, 9424, 9641, 11191, 11780, 11818, 12440, 14440, 19282, 22382, 23560, 23636, 24880, 28880, 29545, 38564, 44764, 47120, 47272, 48205, 55955, 59090, 77128, 89528, 94544, 96410, 111910, 112271, 118180, 154256, 179056, 183179, 192820, 223820, 224542, 236360, 366358, 385640, 447640, 449084, 472720, 561355, 732716, 771280, 895280, 898168, 915895, 1122710, 1465432, 1796336, 1831790, 2245420, 2930864, 3480401, 3663580, 4490840, 6960802, 7327160, 8981680, 13921604, 14654320, 17402005, 27843208, 34804010, 55686416, 69608020, 139216040, 278432080]

約数ペア:

[(1, 278432080), (2, 139216040), (4, 69608020), (5, 55686416), (8, 34804010), (10, 27843208), (16, 17402005), (19, 14654320), (20, 13921604), (31, 8981680), (38, 7327160), (40, 6960802), (62, 4490840), (76, 3663580), (80, 3480401), (95, 2930864), (124, 2245420), (152, 1831790), (155, 1796336), (190, 1465432), (248, 1122710), (304, 915895), (310, 898168), (311, 895280), (361, 771280), (380, 732716), (496, 561355), (589, 472720), (620, 449084), (622, 447640), (722, 385640), (760, 366358), (1178, 236360), (1240, 224542), (1244, 223820), (1444, 192820), (1520, 183179), (1555, 179056), (1805, 154256), (2356, 118180), (2480, 112271), (2488, 111910), (2888, 96410), (2945, 94544), (3110, 89528), (3610, 77128), (4712, 59090), (4976, 55955), (5776, 48205), (5890, 47272), (5909, 47120), (6220, 44764), (7220, 38564), (9424, 29545), (9641, 28880), (11191, 24880), (11780, 23636), (11818, 23560), (12440, 22382), (14440, 19282)]