16980250

素因数分解:

$2^1\times 5^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{313}}^1$

素因数の和:368

約数の個数: 64

約数和(自身を含む): 37619712

約数和(自身を除く): 20639462

約数列:

[1, 2, 5, 7, 10, 14, 25, 31, 35, 50, 62, 70, 125, 155, 175, 217, 250, 310, 313, 350, 434, 626, 775, 875, 1085, 1550, 1565, 1750, 2170, 2191, 3130, 3875, 4382, 5425, 7750, 7825, 9703, 10850, 10955, 15650, 19406, 21910, 27125, 39125, 48515, 54250, 54775, 67921, 78250, 97030, 109550, 135842, 242575, 273875, 339605, 485150, 547750, 679210, 1212875, 1698025, 2425750, 3396050, 8490125, 16980250]

約数ペア:

[(1, 16980250), (2, 8490125), (5, 3396050), (7, 2425750), (10, 1698025), (14, 1212875), (25, 679210), (31, 547750), (35, 485150), (50, 339605), (62, 273875), (70, 242575), (125, 135842), (155, 109550), (175, 97030), (217, 78250), (250, 67921), (310, 54775), (313, 54250), (350, 48515), (434, 39125), (626, 27125), (775, 21910), (875, 19406), (1085, 15650), (1550, 10955), (1565, 10850), (1750, 9703), (2170, 7825), (2191, 7750), (3130, 5425), (3875, 4382)]