78481520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{193}}^1$

素因数の和:259

約数の個数: 160

約数和(自身を含む): 218236032

約数和(自身を除く): 139754512

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 23, 26, 34, 40, 46, 52, 65, 68, 80, 85, 92, 104, 115, 130, 136, 170, 184, 193, 208, 221, 230, 260, 272, 299, 340, 368, 386, 391, 442, 460, 520, 598, 680, 772, 782, 884, 920, 965, 1040, 1105, 1196, 1360, 1495, 1544, 1564, 1768, 1840, 1930, 1955, 2210, 2392, 2509, 2990, 3088, 3128, 3281, 3536, 3860, 3910, 4420, 4439, 4784, 5018, 5083, 5980, 6256, 6562, 7720, 7820, 8840, 8878, 10036, 10166, 11960, 12545, 13124, 15440, 15640, 16405, 17680, 17756, 20072, 20332, 22195, 23920, 25090, 25415, 26248, 31280, 32810, 35512, 40144, 40664, 42653, 44390, 50180, 50830, 52496, 57707, 65620, 71024, 75463, 81328, 85306, 88780, 100360, 101660, 115414, 131240, 150926, 170612, 177560, 200720, 203320, 213265, 230828, 262480, 288535, 301852, 341224, 355120, 377315, 406640, 426530, 461656, 577070, 603704, 682448, 754630, 853060, 923312, 981019, 1154140, 1207408, 1509260, 1706120, 1962038, 2308280, 3018520, 3412240, 3924076, 4616560, 4905095, 6037040, 7848152, 9810190, 15696304, 19620380, 39240760, 78481520]

約数ペア:

[(1, 78481520), (2, 39240760), (4, 19620380), (5, 15696304), (8, 9810190), (10, 7848152), (13, 6037040), (16, 4905095), (17, 4616560), (20, 3924076), (23, 3412240), (26, 3018520), (34, 2308280), (40, 1962038), (46, 1706120), (52, 1509260), (65, 1207408), (68, 1154140), (80, 981019), (85, 923312), (92, 853060), (104, 754630), (115, 682448), (130, 603704), (136, 577070), (170, 461656), (184, 426530), (193, 406640), (208, 377315), (221, 355120), (230, 341224), (260, 301852), (272, 288535), (299, 262480), (340, 230828), (368, 213265), (386, 203320), (391, 200720), (442, 177560), (460, 170612), (520, 150926), (598, 131240), (680, 115414), (772, 101660), (782, 100360), (884, 88780), (920, 85306), (965, 81328), (1040, 75463), (1105, 71024), (1196, 65620), (1360, 57707), (1495, 52496), (1544, 50830), (1564, 50180), (1768, 44390), (1840, 42653), (1930, 40664), (1955, 40144), (2210, 35512), (2392, 32810), (2509, 31280), (2990, 26248), (3088, 25415), (3128, 25090), (3281, 23920), (3536, 22195), (3860, 20332), (3910, 20072), (4420, 17756), (4439, 17680), (4784, 16405), (5018, 15640), (5083, 15440), (5980, 13124), (6256, 12545), (6562, 11960), (7720, 10166), (7820, 10036), (8840, 8878)]