21000751100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{619}}^1\times {\mathrm{2851}}^1$

素因数の和:3508

約数の個数: 144

約数和(自身を含む): 55253963520

約数和(自身を除く): 34253212420

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 25, 28, 34, 35, 50, 68, 70, 85, 100, 119, 140, 170, 175, 238, 340, 350, 425, 476, 595, 619, 700, 850, 1190, 1238, 1700, 2380, 2476, 2851, 2975, 3095, 4333, 5702, 5950, 6190, 8666, 10523, 11404, 11900, 12380, 14255, 15475, 17332, 19957, 21046, 21665, 28510, 30950, 39914, 42092, 43330, 48467, 52615, 57020, 61900, 71275, 73661, 79828, 86660, 96934, 99785, 105230, 108325, 142550, 147322, 193868, 199570, 210460, 216650, 242335, 263075, 285100, 294644, 339269, 368305, 399140, 433300, 484670, 498925, 526150, 678538, 736610, 969340, 997850, 1052300, 1211675, 1357076, 1473220, 1696345, 1764769, 1841525, 1995700, 2423350, 3392690, 3529538, 3683050, 4846700, 6785380, 7059076, 7366100, 8481725, 8823845, 12353383, 16963450, 17647690, 24706766, 30001073, 33926900, 35295380, 44119225, 49413532, 60002146, 61766915, 88238450, 120004292, 123533830, 150005365, 176476900, 210007511, 247067660, 300010730, 308834575, 420015022, 600021460, 617669150, 750026825, 840030044, 1050037555, 1235338300, 1500053650, 2100075110, 3000107300, 4200150220, 5250187775, 10500375550, 21000751100]

約数ペア:

[(1, 21000751100), (2, 10500375550), (4, 5250187775), (5, 4200150220), (7, 3000107300), (10, 2100075110), (14, 1500053650), (17, 1235338300), (20, 1050037555), (25, 840030044), (28, 750026825), (34, 617669150), (35, 600021460), (50, 420015022), (68, 308834575), (70, 300010730), (85, 247067660), (100, 210007511), (119, 176476900), (140, 150005365), (170, 123533830), (175, 120004292), (238, 88238450), (340, 61766915), (350, 60002146), (425, 49413532), (476, 44119225), (595, 35295380), (619, 33926900), (700, 30001073), (850, 24706766), (1190, 17647690), (1238, 16963450), (1700, 12353383), (2380, 8823845), (2476, 8481725), (2851, 7366100), (2975, 7059076), (3095, 6785380), (4333, 4846700), (5702, 3683050), (5950, 3529538), (6190, 3392690), (8666, 2423350), (10523, 1995700), (11404, 1841525), (11900, 1764769), (12380, 1696345), (14255, 1473220), (15475, 1357076), (17332, 1211675), (19957, 1052300), (21046, 997850), (21665, 969340), (28510, 736610), (30950, 678538), (39914, 526150), (42092, 498925), (43330, 484670), (48467, 433300), (52615, 399140), (57020, 368305), (61900, 339269), (71275, 294644), (73661, 285100), (79828, 263075), (86660, 242335), (96934, 216650), (99785, 210460), (105230, 199570), (108325, 193868), (142550, 147322)]