78913520

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{491}}^1$

素因数の和:559

約数の個数: 120

約数和(自身を含む): 219079728

約数和(自身を除く): 140166208

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 41, 49, 56, 70, 80, 82, 98, 112, 140, 164, 196, 205, 245, 280, 287, 328, 392, 410, 490, 491, 560, 574, 656, 784, 820, 980, 982, 1148, 1435, 1640, 1960, 1964, 2009, 2296, 2455, 2870, 3280, 3437, 3920, 3928, 4018, 4592, 4910, 5740, 6874, 7856, 8036, 9820, 10045, 11480, 13748, 16072, 17185, 19640, 20090, 20131, 22960, 24059, 27496, 32144, 34370, 39280, 40180, 40262, 48118, 54992, 68740, 80360, 80524, 96236, 100655, 120295, 137480, 140917, 160720, 161048, 192472, 201310, 240590, 274960, 281834, 322096, 384944, 402620, 481180, 563668, 704585, 805240, 962360, 986419, 1127336, 1409170, 1610480, 1924720, 1972838, 2254672, 2818340, 3945676, 4932095, 5636680, 7891352, 9864190, 11273360, 15782704, 19728380, 39456760, 78913520]

約数ペア:

[(1, 78913520), (2, 39456760), (4, 19728380), (5, 15782704), (7, 11273360), (8, 9864190), (10, 7891352), (14, 5636680), (16, 4932095), (20, 3945676), (28, 2818340), (35, 2254672), (40, 1972838), (41, 1924720), (49, 1610480), (56, 1409170), (70, 1127336), (80, 986419), (82, 962360), (98, 805240), (112, 704585), (140, 563668), (164, 481180), (196, 402620), (205, 384944), (245, 322096), (280, 281834), (287, 274960), (328, 240590), (392, 201310), (410, 192472), (490, 161048), (491, 160720), (560, 140917), (574, 137480), (656, 120295), (784, 100655), (820, 96236), (980, 80524), (982, 80360), (1148, 68740), (1435, 54992), (1640, 48118), (1960, 40262), (1964, 40180), (2009, 39280), (2296, 34370), (2455, 32144), (2870, 27496), (3280, 24059), (3437, 22960), (3920, 20131), (3928, 20090), (4018, 19640), (4592, 17185), (4910, 16072), (5740, 13748), (6874, 11480), (7856, 10045), (8036, 9820)]