28150780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{557}}^1$

素因数の和:611

約数の個数: 72

約数和(自身を含む): 71432928

約数和(自身を除く): 43282148

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 361, 380, 532, 557, 665, 722, 1114, 1330, 1444, 1805, 2228, 2527, 2660, 2785, 3610, 3899, 5054, 5570, 7220, 7798, 10108, 10583, 11140, 12635, 15596, 19495, 21166, 25270, 38990, 42332, 50540, 52915, 74081, 77980, 105830, 148162, 201077, 211660, 296324, 370405, 402154, 740810, 804308, 1005385, 1407539, 1481620, 2010770, 2815078, 4021540, 5630156, 7037695, 14075390, 28150780]

約数ペア:

[(1, 28150780), (2, 14075390), (4, 7037695), (5, 5630156), (7, 4021540), (10, 2815078), (14, 2010770), (19, 1481620), (20, 1407539), (28, 1005385), (35, 804308), (38, 740810), (70, 402154), (76, 370405), (95, 296324), (133, 211660), (140, 201077), (190, 148162), (266, 105830), (361, 77980), (380, 74081), (532, 52915), (557, 50540), (665, 42332), (722, 38990), (1114, 25270), (1330, 21166), (1444, 19495), (1805, 15596), (2228, 12635), (2527, 11140), (2660, 10583), (2785, 10108), (3610, 7798), (3899, 7220), (5054, 5570)]