81761840

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{761}}^1$

素因数の和:870

約数の個数: 80

約数和(自身を含む): 204094080

約数和(自身を除く): 122332240

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 79, 80, 85, 136, 158, 170, 272, 316, 340, 395, 632, 680, 761, 790, 1264, 1343, 1360, 1522, 1580, 2686, 3044, 3160, 3805, 5372, 6088, 6320, 6715, 7610, 10744, 12176, 12937, 13430, 15220, 21488, 25874, 26860, 30440, 51748, 53720, 60119, 60880, 64685, 103496, 107440, 120238, 129370, 206992, 240476, 258740, 300595, 480952, 517480, 601190, 961904, 1022023, 1034960, 1202380, 2044046, 2404760, 4088092, 4809520, 5110115, 8176184, 10220230, 16352368, 20440460, 40880920, 81761840]

約数ペア:

[(1, 81761840), (2, 40880920), (4, 20440460), (5, 16352368), (8, 10220230), (10, 8176184), (16, 5110115), (17, 4809520), (20, 4088092), (34, 2404760), (40, 2044046), (68, 1202380), (79, 1034960), (80, 1022023), (85, 961904), (136, 601190), (158, 517480), (170, 480952), (272, 300595), (316, 258740), (340, 240476), (395, 206992), (632, 129370), (680, 120238), (761, 107440), (790, 103496), (1264, 64685), (1343, 60880), (1360, 60119), (1522, 53720), (1580, 51748), (2686, 30440), (3044, 26860), (3160, 25874), (3805, 21488), (5372, 15220), (6088, 13430), (6320, 12937), (6715, 12176), (7610, 10744)]