21487080

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{1307}}^1$

素因数の和:1458

約数の個数: 64

約数和(自身を含む): 64981440

約数和(自身を除く): 43494360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 137, 274, 411, 548, 685, 822, 1096, 1307, 1370, 1644, 2055, 2614, 2740, 3288, 3921, 4110, 5228, 5480, 6535, 7842, 8220, 10456, 13070, 15684, 16440, 19605, 26140, 31368, 39210, 52280, 78420, 156840, 179059, 358118, 537177, 716236, 895295, 1074354, 1432472, 1790590, 2148708, 2685885, 3581180, 4297416, 5371770, 7162360, 10743540, 21487080]

約数ペア:

[(1, 21487080), (2, 10743540), (3, 7162360), (4, 5371770), (5, 4297416), (6, 3581180), (8, 2685885), (10, 2148708), (12, 1790590), (15, 1432472), (20, 1074354), (24, 895295), (30, 716236), (40, 537177), (60, 358118), (120, 179059), (137, 156840), (274, 78420), (411, 52280), (548, 39210), (685, 31368), (822, 26140), (1096, 19605), (1307, 16440), (1370, 15684), (1644, 13070), (2055, 10456), (2614, 8220), (2740, 7842), (3288, 6535), (3921, 5480), (4110, 5228)]