81746560

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{257}}^1$

素因数の和:354

約数の個数: 128

約数和(自身を含む): 227370240

約数和(自身を除く): 145623680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 71, 80, 112, 128, 140, 142, 160, 224, 257, 280, 284, 320, 355, 448, 497, 514, 560, 568, 640, 710, 896, 994, 1028, 1120, 1136, 1285, 1420, 1799, 1988, 2056, 2240, 2272, 2485, 2570, 2840, 3598, 3976, 4112, 4480, 4544, 4970, 5140, 5680, 7196, 7952, 8224, 8995, 9088, 9940, 10280, 11360, 14392, 15904, 16448, 17990, 18247, 19880, 20560, 22720, 28784, 31808, 32896, 35980, 36494, 39760, 41120, 45440, 57568, 63616, 71960, 72988, 79520, 82240, 91235, 115136, 127729, 143920, 145976, 159040, 164480, 182470, 230272, 255458, 287840, 291952, 318080, 364940, 510916, 575680, 583904, 638645, 729880, 1021832, 1151360, 1167808, 1277290, 1459760, 2043664, 2335616, 2554580, 2919520, 4087328, 5109160, 5839040, 8174656, 10218320, 11678080, 16349312, 20436640, 40873280, 81746560]

約数ペア:

[(1, 81746560), (2, 40873280), (4, 20436640), (5, 16349312), (7, 11678080), (8, 10218320), (10, 8174656), (14, 5839040), (16, 5109160), (20, 4087328), (28, 2919520), (32, 2554580), (35, 2335616), (40, 2043664), (56, 1459760), (64, 1277290), (70, 1167808), (71, 1151360), (80, 1021832), (112, 729880), (128, 638645), (140, 583904), (142, 575680), (160, 510916), (224, 364940), (257, 318080), (280, 291952), (284, 287840), (320, 255458), (355, 230272), (448, 182470), (497, 164480), (514, 159040), (560, 145976), (568, 143920), (640, 127729), (710, 115136), (896, 91235), (994, 82240), (1028, 79520), (1120, 72988), (1136, 71960), (1285, 63616), (1420, 57568), (1799, 45440), (1988, 41120), (2056, 39760), (2240, 36494), (2272, 35980), (2485, 32896), (2570, 31808), (2840, 28784), (3598, 22720), (3976, 20560), (4112, 19880), (4480, 18247), (4544, 17990), (4970, 16448), (5140, 15904), (5680, 14392), (7196, 11360), (7952, 10280), (8224, 9940), (8995, 9088)]