78893920

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{347}}^1$

素因数の和:405

約数の個数: 144

約数和(自身を含む): 224940240

約数和(自身を除く): 146046320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 32, 35, 40, 49, 56, 58, 70, 80, 98, 112, 116, 140, 145, 160, 196, 203, 224, 232, 245, 280, 290, 347, 392, 406, 464, 490, 560, 580, 694, 784, 812, 928, 980, 1015, 1120, 1160, 1388, 1421, 1568, 1624, 1735, 1960, 2030, 2320, 2429, 2776, 2842, 3248, 3470, 3920, 4060, 4640, 4858, 5552, 5684, 6496, 6940, 7105, 7840, 8120, 9716, 10063, 11104, 11368, 12145, 13880, 14210, 16240, 17003, 19432, 20126, 22736, 24290, 27760, 28420, 32480, 34006, 38864, 40252, 45472, 48580, 50315, 55520, 56840, 68012, 70441, 77728, 80504, 85015, 97160, 100630, 113680, 136024, 140882, 161008, 170030, 194320, 201260, 227360, 272048, 281764, 322016, 340060, 352205, 388640, 402520, 493087, 544096, 563528, 680120, 704410, 805040, 986174, 1127056, 1360240, 1408820, 1610080, 1972348, 2254112, 2465435, 2720480, 2817640, 3944696, 4930870, 5635280, 7889392, 9861740, 11270560, 15778784, 19723480, 39446960, 78893920]

約数ペア:

[(1, 78893920), (2, 39446960), (4, 19723480), (5, 15778784), (7, 11270560), (8, 9861740), (10, 7889392), (14, 5635280), (16, 4930870), (20, 3944696), (28, 2817640), (29, 2720480), (32, 2465435), (35, 2254112), (40, 1972348), (49, 1610080), (56, 1408820), (58, 1360240), (70, 1127056), (80, 986174), (98, 805040), (112, 704410), (116, 680120), (140, 563528), (145, 544096), (160, 493087), (196, 402520), (203, 388640), (224, 352205), (232, 340060), (245, 322016), (280, 281764), (290, 272048), (347, 227360), (392, 201260), (406, 194320), (464, 170030), (490, 161008), (560, 140882), (580, 136024), (694, 113680), (784, 100630), (812, 97160), (928, 85015), (980, 80504), (1015, 77728), (1120, 70441), (1160, 68012), (1388, 56840), (1421, 55520), (1568, 50315), (1624, 48580), (1735, 45472), (1960, 40252), (2030, 38864), (2320, 34006), (2429, 32480), (2776, 28420), (2842, 27760), (3248, 24290), (3470, 22736), (3920, 20126), (4060, 19432), (4640, 17003), (4858, 16240), (5552, 14210), (5684, 13880), (6496, 12145), (6940, 11368), (7105, 11104), (7840, 10063), (8120, 9716)]