19980660

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{421}}^1$

素因数の和:553

約数の個数: 96

約数和(自身を含む): 64657152

約数和(自身を除く): 44676492

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 113, 140, 210, 226, 339, 420, 421, 452, 565, 678, 791, 842, 1130, 1263, 1356, 1582, 1684, 1695, 2105, 2260, 2373, 2526, 2947, 3164, 3390, 3955, 4210, 4746, 5052, 5894, 6315, 6780, 7910, 8420, 8841, 9492, 11788, 11865, 12630, 14735, 15820, 17682, 23730, 25260, 29470, 35364, 44205, 47460, 47573, 58940, 88410, 95146, 142719, 176820, 190292, 237865, 285438, 333011, 475730, 570876, 666022, 713595, 951460, 999033, 1332044, 1427190, 1665055, 1998066, 2854380, 3330110, 3996132, 4995165, 6660220, 9990330, 19980660]

約数ペア:

[(1, 19980660), (2, 9990330), (3, 6660220), (4, 4995165), (5, 3996132), (6, 3330110), (7, 2854380), (10, 1998066), (12, 1665055), (14, 1427190), (15, 1332044), (20, 999033), (21, 951460), (28, 713595), (30, 666022), (35, 570876), (42, 475730), (60, 333011), (70, 285438), (84, 237865), (105, 190292), (113, 176820), (140, 142719), (210, 95146), (226, 88410), (339, 58940), (420, 47573), (421, 47460), (452, 44205), (565, 35364), (678, 29470), (791, 25260), (842, 23730), (1130, 17682), (1263, 15820), (1356, 14735), (1582, 12630), (1684, 11865), (1695, 11788), (2105, 9492), (2260, 8841), (2373, 8420), (2526, 7910), (2947, 6780), (3164, 6315), (3390, 5894), (3955, 5052), (4210, 4746)]