77180720

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{167}}^1$

素因数の和:342

約数の個数: 80

約数和(自身を含む): 185613120

約数和(自身を除く): 108432400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 109, 167, 212, 218, 265, 334, 424, 436, 530, 545, 668, 835, 848, 872, 1060, 1090, 1336, 1670, 1744, 2120, 2180, 2672, 3340, 4240, 4360, 5777, 6680, 8720, 8851, 11554, 13360, 17702, 18203, 23108, 28885, 35404, 36406, 44255, 46216, 57770, 70808, 72812, 88510, 91015, 92432, 115540, 141616, 145624, 177020, 182030, 231080, 291248, 354040, 364060, 462160, 708080, 728120, 964759, 1456240, 1929518, 3859036, 4823795, 7718072, 9647590, 15436144, 19295180, 38590360, 77180720]

約数ペア:

[(1, 77180720), (2, 38590360), (4, 19295180), (5, 15436144), (8, 9647590), (10, 7718072), (16, 4823795), (20, 3859036), (40, 1929518), (53, 1456240), (80, 964759), (106, 728120), (109, 708080), (167, 462160), (212, 364060), (218, 354040), (265, 291248), (334, 231080), (424, 182030), (436, 177020), (530, 145624), (545, 141616), (668, 115540), (835, 92432), (848, 91015), (872, 88510), (1060, 72812), (1090, 70808), (1336, 57770), (1670, 46216), (1744, 44255), (2120, 36406), (2180, 35404), (2672, 28885), (3340, 23108), (4240, 18203), (4360, 17702), (5777, 13360), (6680, 11554), (8720, 8851)]