20620880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1601}}^1$

素因数の和:1644

約数の個数: 80

約数和(自身を含む): 57210624

約数和(自身を除く): 36589744

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 35, 40, 46, 56, 70, 80, 92, 112, 115, 140, 161, 184, 230, 280, 322, 368, 460, 560, 644, 805, 920, 1288, 1601, 1610, 1840, 2576, 3202, 3220, 6404, 6440, 8005, 11207, 12808, 12880, 16010, 22414, 25616, 32020, 36823, 44828, 56035, 64040, 73646, 89656, 112070, 128080, 147292, 179312, 184115, 224140, 257761, 294584, 368230, 448280, 515522, 589168, 736460, 896560, 1031044, 1288805, 1472920, 2062088, 2577610, 2945840, 4124176, 5155220, 10310440, 20620880]

約数ペア:

[(1, 20620880), (2, 10310440), (4, 5155220), (5, 4124176), (7, 2945840), (8, 2577610), (10, 2062088), (14, 1472920), (16, 1288805), (20, 1031044), (23, 896560), (28, 736460), (35, 589168), (40, 515522), (46, 448280), (56, 368230), (70, 294584), (80, 257761), (92, 224140), (112, 184115), (115, 179312), (140, 147292), (161, 128080), (184, 112070), (230, 89656), (280, 73646), (322, 64040), (368, 56035), (460, 44828), (560, 36823), (644, 32020), (805, 25616), (920, 22414), (1288, 16010), (1601, 12880), (1610, 12808), (1840, 11207), (2576, 8005), (3202, 6440), (3220, 6404)]