19873980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{15773}}^1$

素因数の和:15795

約数の個数: 72

約数和(自身を含む): 68900832

約数和(自身を除く): 49026852

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 15773, 31546, 47319, 63092, 78865, 94638, 110411, 141957, 157730, 189276, 220822, 236595, 283914, 315460, 331233, 441644, 473190, 552055, 567828, 662466, 709785, 946380, 993699, 1104110, 1324932, 1419570, 1656165, 1987398, 2208220, 2839140, 3312330, 3974796, 4968495, 6624660, 9936990, 19873980]

約数ペア:

[(1, 19873980), (2, 9936990), (3, 6624660), (4, 4968495), (5, 3974796), (6, 3312330), (7, 2839140), (9, 2208220), (10, 1987398), (12, 1656165), (14, 1419570), (15, 1324932), (18, 1104110), (20, 993699), (21, 946380), (28, 709785), (30, 662466), (35, 567828), (36, 552055), (42, 473190), (45, 441644), (60, 331233), (63, 315460), (70, 283914), (84, 236595), (90, 220822), (105, 189276), (126, 157730), (140, 141957), (180, 110411), (210, 94638), (252, 78865), (315, 63092), (420, 47319), (630, 31546), (1260, 15773)]