205065040

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{457}}^1$

素因数の和:620

約数の個数: 80

約数和(自身を含む): 490682880

約数和(自身を除く): 285617840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 79, 80, 142, 158, 284, 316, 355, 395, 457, 568, 632, 710, 790, 914, 1136, 1264, 1420, 1580, 1828, 2285, 2840, 3160, 3656, 4570, 5609, 5680, 6320, 7312, 9140, 11218, 18280, 22436, 28045, 32447, 36103, 36560, 44872, 56090, 64894, 72206, 89744, 112180, 129788, 144412, 162235, 180515, 224360, 259576, 288824, 324470, 361030, 448720, 519152, 577648, 648940, 722060, 1297880, 1444120, 2563313, 2595760, 2888240, 5126626, 10253252, 12816565, 20506504, 25633130, 41013008, 51266260, 102532520, 205065040]

約数ペア:

[(1, 205065040), (2, 102532520), (4, 51266260), (5, 41013008), (8, 25633130), (10, 20506504), (16, 12816565), (20, 10253252), (40, 5126626), (71, 2888240), (79, 2595760), (80, 2563313), (142, 1444120), (158, 1297880), (284, 722060), (316, 648940), (355, 577648), (395, 519152), (457, 448720), (568, 361030), (632, 324470), (710, 288824), (790, 259576), (914, 224360), (1136, 180515), (1264, 162235), (1420, 144412), (1580, 129788), (1828, 112180), (2285, 89744), (2840, 72206), (3160, 64894), (3656, 56090), (4570, 44872), (5609, 36560), (5680, 36103), (6320, 32447), (7312, 28045), (9140, 22436), (11218, 18280)]