8008120

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{257}}^1$

素因数の和:328

約数の個数: 64

約数和(自身を含む): 19504800

約数和(自身を除く): 11496680

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 41, 76, 82, 95, 152, 164, 190, 205, 257, 328, 380, 410, 514, 760, 779, 820, 1028, 1285, 1558, 1640, 2056, 2570, 3116, 3895, 4883, 5140, 6232, 7790, 9766, 10280, 10537, 15580, 19532, 21074, 24415, 31160, 39064, 42148, 48830, 52685, 84296, 97660, 105370, 195320, 200203, 210740, 400406, 421480, 800812, 1001015, 1601624, 2002030, 4004060, 8008120]

約数ペア:

[(1, 8008120), (2, 4004060), (4, 2002030), (5, 1601624), (8, 1001015), (10, 800812), (19, 421480), (20, 400406), (38, 210740), (40, 200203), (41, 195320), (76, 105370), (82, 97660), (95, 84296), (152, 52685), (164, 48830), (190, 42148), (205, 39064), (257, 31160), (328, 24415), (380, 21074), (410, 19532), (514, 15580), (760, 10537), (779, 10280), (820, 9766), (1028, 7790), (1285, 6232), (1558, 5140), (1640, 4883), (2056, 3895), (2570, 3116)]