20769920

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1$

素因数の和:142

約数の個数: 128

約数和(自身を含む): 55520640

約数和(自身を除く): 34750720

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 23, 32, 34, 40, 46, 64, 68, 80, 83, 85, 92, 115, 128, 136, 160, 166, 170, 184, 230, 272, 320, 332, 340, 368, 391, 415, 460, 544, 640, 664, 680, 736, 782, 830, 920, 1088, 1328, 1360, 1411, 1472, 1564, 1660, 1840, 1909, 1955, 2176, 2656, 2720, 2822, 2944, 3128, 3320, 3680, 3818, 3910, 5312, 5440, 5644, 6256, 6640, 7055, 7360, 7636, 7820, 9545, 10624, 10880, 11288, 12512, 13280, 14110, 14720, 15272, 15640, 19090, 22576, 25024, 26560, 28220, 30544, 31280, 32453, 38180, 45152, 50048, 53120, 56440, 61088, 62560, 64906, 76360, 90304, 112880, 122176, 125120, 129812, 152720, 162265, 180608, 225760, 244352, 250240, 259624, 305440, 324530, 451520, 519248, 610880, 649060, 903040, 1038496, 1221760, 1298120, 2076992, 2596240, 4153984, 5192480, 10384960, 20769920]

約数ペア:

[(1, 20769920), (2, 10384960), (4, 5192480), (5, 4153984), (8, 2596240), (10, 2076992), (16, 1298120), (17, 1221760), (20, 1038496), (23, 903040), (32, 649060), (34, 610880), (40, 519248), (46, 451520), (64, 324530), (68, 305440), (80, 259624), (83, 250240), (85, 244352), (92, 225760), (115, 180608), (128, 162265), (136, 152720), (160, 129812), (166, 125120), (170, 122176), (184, 112880), (230, 90304), (272, 76360), (320, 64906), (332, 62560), (340, 61088), (368, 56440), (391, 53120), (415, 50048), (460, 45152), (544, 38180), (640, 32453), (664, 31280), (680, 30544), (736, 28220), (782, 26560), (830, 25024), (920, 22576), (1088, 19090), (1328, 15640), (1360, 15272), (1411, 14720), (1472, 14110), (1564, 13280), (1660, 12512), (1840, 11288), (1909, 10880), (1955, 10624), (2176, 9545), (2656, 7820), (2720, 7636), (2822, 7360), (2944, 7055), (3128, 6640), (3320, 6256), (3680, 5644), (3818, 5440), (3910, 5312)]