20205520

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{179}}^1$

素因数の和:292

約数の個数: 80

約数和(自身を含む): 50621760

約数和(自身を除く): 30416240

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 83, 85, 136, 166, 170, 179, 272, 332, 340, 358, 415, 664, 680, 716, 830, 895, 1328, 1360, 1411, 1432, 1660, 1790, 2822, 2864, 3043, 3320, 3580, 5644, 6086, 6640, 7055, 7160, 11288, 12172, 14110, 14320, 14857, 15215, 22576, 24344, 28220, 29714, 30430, 48688, 56440, 59428, 60860, 74285, 112880, 118856, 121720, 148570, 237712, 243440, 252569, 297140, 505138, 594280, 1010276, 1188560, 1262845, 2020552, 2525690, 4041104, 5051380, 10102760, 20205520]

約数ペア:

[(1, 20205520), (2, 10102760), (4, 5051380), (5, 4041104), (8, 2525690), (10, 2020552), (16, 1262845), (17, 1188560), (20, 1010276), (34, 594280), (40, 505138), (68, 297140), (80, 252569), (83, 243440), (85, 237712), (136, 148570), (166, 121720), (170, 118856), (179, 112880), (272, 74285), (332, 60860), (340, 59428), (358, 56440), (415, 48688), (664, 30430), (680, 29714), (716, 28220), (830, 24344), (895, 22576), (1328, 15215), (1360, 14857), (1411, 14320), (1432, 14110), (1660, 12172), (1790, 11288), (2822, 7160), (2864, 7055), (3043, 6640), (3320, 6086), (3580, 5644)]