28536320

素因数分解:

$2^9\times 5^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:251

約数の個数: 80

約数和(自身を含む): 69825888

約数和(自身を除く): 41289568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 71, 80, 128, 142, 157, 160, 256, 284, 314, 320, 355, 512, 568, 628, 640, 710, 785, 1136, 1256, 1280, 1420, 1570, 2272, 2512, 2560, 2840, 3140, 4544, 5024, 5680, 6280, 9088, 10048, 11147, 11360, 12560, 18176, 20096, 22294, 22720, 25120, 36352, 40192, 44588, 45440, 50240, 55735, 80384, 89176, 90880, 100480, 111470, 178352, 181760, 200960, 222940, 356704, 401920, 445880, 713408, 891760, 1426816, 1783520, 2853632, 3567040, 5707264, 7134080, 14268160, 28536320]

約数ペア:

[(1, 28536320), (2, 14268160), (4, 7134080), (5, 5707264), (8, 3567040), (10, 2853632), (16, 1783520), (20, 1426816), (32, 891760), (40, 713408), (64, 445880), (71, 401920), (80, 356704), (128, 222940), (142, 200960), (157, 181760), (160, 178352), (256, 111470), (284, 100480), (314, 90880), (320, 89176), (355, 80384), (512, 55735), (568, 50240), (628, 45440), (640, 44588), (710, 40192), (785, 36352), (1136, 25120), (1256, 22720), (1280, 22294), (1420, 20096), (1570, 18176), (2272, 12560), (2512, 11360), (2560, 11147), (2840, 10048), (3140, 9088), (4544, 6280), (5024, 5680)]