28808040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{431}}^1\times {\mathrm{557}}^1$

素因数の和:1002

約数の個数: 64

約数和(自身を含む): 86780160

約数和(自身を除く): 57972120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 431, 557, 862, 1114, 1293, 1671, 1724, 2155, 2228, 2586, 2785, 3342, 3448, 4310, 4456, 5172, 5570, 6465, 6684, 8355, 8620, 10344, 11140, 12930, 13368, 16710, 17240, 22280, 25860, 33420, 51720, 66840, 240067, 480134, 720201, 960268, 1200335, 1440402, 1920536, 2400670, 2880804, 3601005, 4801340, 5761608, 7202010, 9602680, 14404020, 28808040]

約数ペア:

[(1, 28808040), (2, 14404020), (3, 9602680), (4, 7202010), (5, 5761608), (6, 4801340), (8, 3601005), (10, 2880804), (12, 2400670), (15, 1920536), (20, 1440402), (24, 1200335), (30, 960268), (40, 720201), (60, 480134), (120, 240067), (431, 66840), (557, 51720), (862, 33420), (1114, 25860), (1293, 22280), (1671, 17240), (1724, 16710), (2155, 13368), (2228, 12930), (2586, 11140), (2785, 10344), (3342, 8620), (3448, 8355), (4310, 6684), (4456, 6465), (5172, 5570)]