1664461520

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1\times {\mathrm{1619}}^1$

素因数の和:1884

約数の個数: 80

約数和(自身を含む): 3948497280

約数和(自身を除く): 2284035760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 181, 284, 355, 362, 568, 710, 724, 905, 1136, 1420, 1448, 1619, 1810, 2840, 2896, 3238, 3620, 5680, 6476, 7240, 8095, 12851, 12952, 14480, 16190, 25702, 25904, 32380, 51404, 64255, 64760, 102808, 114949, 128510, 129520, 205616, 229898, 257020, 293039, 459796, 514040, 574745, 586078, 919592, 1028080, 1149490, 1172156, 1465195, 1839184, 2298980, 2344312, 2930390, 4597960, 4688624, 5860780, 9195920, 11721560, 20805769, 23443120, 41611538, 83223076, 104028845, 166446152, 208057690, 332892304, 416115380, 832230760, 1664461520]

約数ペア:

[(1, 1664461520), (2, 832230760), (4, 416115380), (5, 332892304), (8, 208057690), (10, 166446152), (16, 104028845), (20, 83223076), (40, 41611538), (71, 23443120), (80, 20805769), (142, 11721560), (181, 9195920), (284, 5860780), (355, 4688624), (362, 4597960), (568, 2930390), (710, 2344312), (724, 2298980), (905, 1839184), (1136, 1465195), (1420, 1172156), (1448, 1149490), (1619, 1028080), (1810, 919592), (2840, 586078), (2896, 574745), (3238, 514040), (3620, 459796), (5680, 293039), (6476, 257020), (7240, 229898), (8095, 205616), (12851, 129520), (12952, 128510), (14480, 114949), (16190, 102808), (25702, 64760), (25904, 64255), (32380, 51404)]