28757260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{569}}^1$

素因数の和:623

約数の個数: 72

約数和(自身を含む): 72969120

約数和(自身を除く): 44211860

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, 569, 665, 722, 1138, 1330, 1444, 1805, 2276, 2527, 2660, 2845, 3610, 3983, 5054, 5690, 7220, 7966, 10108, 10811, 11380, 12635, 15932, 19915, 21622, 25270, 39830, 43244, 50540, 54055, 75677, 79660, 108110, 151354, 205409, 216220, 302708, 378385, 410818, 756770, 821636, 1027045, 1437863, 1513540, 2054090, 2875726, 4108180, 5751452, 7189315, 14378630, 28757260]

約数ペア:

[(1, 28757260), (2, 14378630), (4, 7189315), (5, 5751452), (7, 4108180), (10, 2875726), (14, 2054090), (19, 1513540), (20, 1437863), (28, 1027045), (35, 821636), (38, 756770), (70, 410818), (76, 378385), (95, 302708), (133, 216220), (140, 205409), (190, 151354), (266, 108110), (361, 79660), (380, 75677), (532, 54055), (569, 50540), (665, 43244), (722, 39830), (1138, 25270), (1330, 21622), (1444, 19915), (1805, 15932), (2276, 12635), (2527, 11380), (2660, 10811), (2845, 10108), (3610, 7966), (3983, 7220), (5054, 5690)]