78454420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{137}}^2$

素因数の和:313

約数の個数: 72

約数和(自身を含む): 190582560

約数和(自身を除く): 112128140

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 137, 190, 209, 220, 274, 380, 418, 548, 685, 836, 1045, 1370, 1507, 2090, 2603, 2740, 3014, 4180, 5206, 6028, 7535, 10412, 13015, 15070, 18769, 26030, 28633, 30140, 37538, 52060, 57266, 75076, 93845, 114532, 143165, 187690, 206459, 286330, 356611, 375380, 412918, 572660, 713222, 825836, 1032295, 1426444, 1783055, 2064590, 3566110, 3922721, 4129180, 7132220, 7845442, 15690884, 19613605, 39227210, 78454420]

約数ペア:

[(1, 78454420), (2, 39227210), (4, 19613605), (5, 15690884), (10, 7845442), (11, 7132220), (19, 4129180), (20, 3922721), (22, 3566110), (38, 2064590), (44, 1783055), (55, 1426444), (76, 1032295), (95, 825836), (110, 713222), (137, 572660), (190, 412918), (209, 375380), (220, 356611), (274, 286330), (380, 206459), (418, 187690), (548, 143165), (685, 114532), (836, 93845), (1045, 75076), (1370, 57266), (1507, 52060), (2090, 37538), (2603, 30140), (2740, 28633), (3014, 26030), (4180, 18769), (5206, 15070), (6028, 13015), (7535, 10412)]