1981520

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:108

約数の個数: 80

約数和(自身を含む): 5142528

約数和(自身を除く): 3161008

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 31, 34, 40, 47, 62, 68, 80, 85, 94, 124, 136, 155, 170, 188, 235, 248, 272, 310, 340, 376, 470, 496, 527, 620, 680, 752, 799, 940, 1054, 1240, 1360, 1457, 1598, 1880, 2108, 2480, 2635, 2914, 3196, 3760, 3995, 4216, 5270, 5828, 6392, 7285, 7990, 8432, 10540, 11656, 12784, 14570, 15980, 21080, 23312, 24769, 29140, 31960, 42160, 49538, 58280, 63920, 99076, 116560, 123845, 198152, 247690, 396304, 495380, 990760, 1981520]

約数ペア:

[(1, 1981520), (2, 990760), (4, 495380), (5, 396304), (8, 247690), (10, 198152), (16, 123845), (17, 116560), (20, 99076), (31, 63920), (34, 58280), (40, 49538), (47, 42160), (62, 31960), (68, 29140), (80, 24769), (85, 23312), (94, 21080), (124, 15980), (136, 14570), (155, 12784), (170, 11656), (188, 10540), (235, 8432), (248, 7990), (272, 7285), (310, 6392), (340, 5828), (376, 5270), (470, 4216), (496, 3995), (527, 3760), (620, 3196), (680, 2914), (752, 2635), (799, 2480), (940, 2108), (1054, 1880), (1240, 1598), (1360, 1457)]