19711300

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{971}}^1$

素因数の和:1021

約数の個数: 72

約数和(自身を含む): 50621760

約数和(自身を除く): 30910460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 29, 35, 50, 58, 70, 100, 116, 140, 145, 175, 203, 290, 350, 406, 580, 700, 725, 812, 971, 1015, 1450, 1942, 2030, 2900, 3884, 4060, 4855, 5075, 6797, 9710, 10150, 13594, 19420, 20300, 24275, 27188, 28159, 33985, 48550, 56318, 67970, 97100, 112636, 135940, 140795, 169925, 197113, 281590, 339850, 394226, 563180, 679700, 703975, 788452, 985565, 1407950, 1971130, 2815900, 3942260, 4927825, 9855650, 19711300]

約数ペア:

[(1, 19711300), (2, 9855650), (4, 4927825), (5, 3942260), (7, 2815900), (10, 1971130), (14, 1407950), (20, 985565), (25, 788452), (28, 703975), (29, 679700), (35, 563180), (50, 394226), (58, 339850), (70, 281590), (100, 197113), (116, 169925), (140, 140795), (145, 135940), (175, 112636), (203, 97100), (290, 67970), (350, 56318), (406, 48550), (580, 33985), (700, 28159), (725, 27188), (812, 24275), (971, 20300), (1015, 19420), (1450, 13594), (1942, 10150), (2030, 9710), (2900, 6797), (3884, 5075), (4060, 4855)]