20135120

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{353}}^1$

素因数の和:420

約数の個数: 80

約数和(自身を含む): 50568192

約数和(自身を除く): 30433072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 31, 40, 46, 62, 80, 92, 115, 124, 155, 184, 230, 248, 310, 353, 368, 460, 496, 620, 706, 713, 920, 1240, 1412, 1426, 1765, 1840, 2480, 2824, 2852, 3530, 3565, 5648, 5704, 7060, 7130, 8119, 10943, 11408, 14120, 14260, 16238, 21886, 28240, 28520, 32476, 40595, 43772, 54715, 57040, 64952, 81190, 87544, 109430, 129904, 162380, 175088, 218860, 251689, 324760, 437720, 503378, 649520, 875440, 1006756, 1258445, 2013512, 2516890, 4027024, 5033780, 10067560, 20135120]

約数ペア:

[(1, 20135120), (2, 10067560), (4, 5033780), (5, 4027024), (8, 2516890), (10, 2013512), (16, 1258445), (20, 1006756), (23, 875440), (31, 649520), (40, 503378), (46, 437720), (62, 324760), (80, 251689), (92, 218860), (115, 175088), (124, 162380), (155, 129904), (184, 109430), (230, 87544), (248, 81190), (310, 64952), (353, 57040), (368, 54715), (460, 43772), (496, 40595), (620, 32476), (706, 28520), (713, 28240), (920, 21886), (1240, 16238), (1412, 14260), (1426, 14120), (1765, 11408), (1840, 10943), (2480, 8119), (2824, 7130), (2852, 7060), (3530, 5704), (3565, 5648)]