21748480

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1307}}^1$

素因数の和:1341

約数の個数: 72

約数和(自身を含む): 56144592

約数和(自身を除く): 34396112

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 520, 640, 832, 1040, 1280, 1307, 1664, 2080, 2614, 3328, 4160, 5228, 6535, 8320, 10456, 13070, 16640, 16991, 20912, 26140, 33982, 41824, 52280, 67964, 83648, 84955, 104560, 135928, 167296, 169910, 209120, 271856, 334592, 339820, 418240, 543712, 679640, 836480, 1087424, 1359280, 1672960, 2174848, 2718560, 4349696, 5437120, 10874240, 21748480]

約数ペア:

[(1, 21748480), (2, 10874240), (4, 5437120), (5, 4349696), (8, 2718560), (10, 2174848), (13, 1672960), (16, 1359280), (20, 1087424), (26, 836480), (32, 679640), (40, 543712), (52, 418240), (64, 339820), (65, 334592), (80, 271856), (104, 209120), (128, 169910), (130, 167296), (160, 135928), (208, 104560), (256, 84955), (260, 83648), (320, 67964), (416, 52280), (520, 41824), (640, 33982), (832, 26140), (1040, 20912), (1280, 16991), (1307, 16640), (1664, 13070), (2080, 10456), (2614, 8320), (3328, 6535), (4160, 5228)]