21509950

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{151}}^1$

素因数の和:218

約数の個数: 96

約数和(自身を含む): 51568128

約数和(自身を除く): 30058178

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 25, 35, 37, 50, 55, 70, 74, 77, 110, 151, 154, 175, 185, 259, 275, 302, 350, 370, 385, 407, 518, 550, 755, 770, 814, 925, 1057, 1295, 1510, 1661, 1850, 1925, 2035, 2114, 2590, 2849, 3322, 3775, 3850, 4070, 5285, 5587, 5698, 6475, 7550, 8305, 10175, 10570, 11174, 11627, 12950, 14245, 16610, 20350, 23254, 26425, 27935, 28490, 39109, 41525, 52850, 55870, 58135, 61457, 71225, 78218, 83050, 116270, 122914, 139675, 142450, 195545, 279350, 290675, 307285, 391090, 430199, 581350, 614570, 860398, 977725, 1536425, 1955450, 2150995, 3072850, 4301990, 10754975, 21509950]

約数ペア:

[(1, 21509950), (2, 10754975), (5, 4301990), (7, 3072850), (10, 2150995), (11, 1955450), (14, 1536425), (22, 977725), (25, 860398), (35, 614570), (37, 581350), (50, 430199), (55, 391090), (70, 307285), (74, 290675), (77, 279350), (110, 195545), (151, 142450), (154, 139675), (175, 122914), (185, 116270), (259, 83050), (275, 78218), (302, 71225), (350, 61457), (370, 58135), (385, 55870), (407, 52850), (518, 41525), (550, 39109), (755, 28490), (770, 27935), (814, 26425), (925, 23254), (1057, 20350), (1295, 16610), (1510, 14245), (1661, 12950), (1850, 11627), (1925, 11174), (2035, 10570), (2114, 10175), (2590, 8305), (2849, 7550), (3322, 6475), (3775, 5698), (3850, 5587), (4070, 5285)]