19748750

素因数分解:

$2^1\times 5^4\times 7^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:127

約数の個数: 80

約数和(自身を含む): 44160864

約数和(自身を除く): 24412114

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 37, 50, 61, 70, 74, 122, 125, 175, 185, 250, 259, 305, 350, 370, 427, 518, 610, 625, 854, 875, 925, 1250, 1295, 1525, 1750, 1850, 2135, 2257, 2590, 3050, 4270, 4375, 4514, 4625, 6475, 7625, 8750, 9250, 10675, 11285, 12950, 15250, 15799, 21350, 22570, 23125, 31598, 32375, 38125, 46250, 53375, 56425, 64750, 76250, 78995, 106750, 112850, 157990, 161875, 266875, 282125, 323750, 394975, 533750, 564250, 789950, 1410625, 1974875, 2821250, 3949750, 9874375, 19748750]

約数ペア:

[(1, 19748750), (2, 9874375), (5, 3949750), (7, 2821250), (10, 1974875), (14, 1410625), (25, 789950), (35, 564250), (37, 533750), (50, 394975), (61, 323750), (70, 282125), (74, 266875), (122, 161875), (125, 157990), (175, 112850), (185, 106750), (250, 78995), (259, 76250), (305, 64750), (350, 56425), (370, 53375), (427, 46250), (518, 38125), (610, 32375), (625, 31598), (854, 23125), (875, 22570), (925, 21350), (1250, 15799), (1295, 15250), (1525, 12950), (1750, 11285), (1850, 10675), (2135, 9250), (2257, 8750), (2590, 7625), (3050, 6475), (4270, 4625), (4375, 4514)]