78122480

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:187

約数の個数: 120

約数和(自身を含む): 200999040

約数和(自身を除く): 122876560

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 31, 34, 40, 62, 68, 80, 85, 109, 124, 136, 155, 170, 218, 248, 272, 289, 310, 340, 436, 496, 527, 545, 578, 620, 680, 872, 1054, 1090, 1156, 1240, 1360, 1445, 1744, 1853, 2108, 2180, 2312, 2480, 2635, 2890, 3379, 3706, 4216, 4360, 4624, 5270, 5780, 6758, 7412, 8432, 8720, 8959, 9265, 10540, 11560, 13516, 14824, 16895, 17918, 18530, 21080, 23120, 27032, 29648, 31501, 33790, 35836, 37060, 42160, 44795, 54064, 57443, 63002, 67580, 71672, 74120, 89590, 114886, 126004, 135160, 143344, 148240, 157505, 179180, 229772, 252008, 270320, 287215, 315010, 358360, 459544, 504016, 574430, 630020, 716720, 919088, 976531, 1148860, 1260040, 1953062, 2297720, 2520080, 3906124, 4595440, 4882655, 7812248, 9765310, 15624496, 19530620, 39061240, 78122480]

約数ペア:

[(1, 78122480), (2, 39061240), (4, 19530620), (5, 15624496), (8, 9765310), (10, 7812248), (16, 4882655), (17, 4595440), (20, 3906124), (31, 2520080), (34, 2297720), (40, 1953062), (62, 1260040), (68, 1148860), (80, 976531), (85, 919088), (109, 716720), (124, 630020), (136, 574430), (155, 504016), (170, 459544), (218, 358360), (248, 315010), (272, 287215), (289, 270320), (310, 252008), (340, 229772), (436, 179180), (496, 157505), (527, 148240), (545, 143344), (578, 135160), (620, 126004), (680, 114886), (872, 89590), (1054, 74120), (1090, 71672), (1156, 67580), (1240, 63002), (1360, 57443), (1445, 54064), (1744, 44795), (1853, 42160), (2108, 37060), (2180, 35836), (2312, 33790), (2480, 31501), (2635, 29648), (2890, 27032), (3379, 23120), (3706, 21080), (4216, 18530), (4360, 17918), (4624, 16895), (5270, 14824), (5780, 13516), (6758, 11560), (7412, 10540), (8432, 9265), (8720, 8959)]