28420140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{431}}^1$

素因数の和:607

約数の個数: 96

約数和(自身を含む): 91736064

約数和(自身を除く): 63315924

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 157, 210, 314, 420, 431, 471, 628, 785, 862, 942, 1099, 1293, 1570, 1724, 1884, 2155, 2198, 2355, 2586, 3017, 3140, 3297, 4310, 4396, 4710, 5172, 5495, 6034, 6465, 6594, 8620, 9051, 9420, 10990, 12068, 12930, 13188, 15085, 16485, 18102, 21980, 25860, 30170, 32970, 36204, 45255, 60340, 65940, 67667, 90510, 135334, 181020, 203001, 270668, 338335, 406002, 473669, 676670, 812004, 947338, 1015005, 1353340, 1421007, 1894676, 2030010, 2368345, 2842014, 4060020, 4736690, 5684028, 7105035, 9473380, 14210070, 28420140]

約数ペア:

[(1, 28420140), (2, 14210070), (3, 9473380), (4, 7105035), (5, 5684028), (6, 4736690), (7, 4060020), (10, 2842014), (12, 2368345), (14, 2030010), (15, 1894676), (20, 1421007), (21, 1353340), (28, 1015005), (30, 947338), (35, 812004), (42, 676670), (60, 473669), (70, 406002), (84, 338335), (105, 270668), (140, 203001), (157, 181020), (210, 135334), (314, 90510), (420, 67667), (431, 65940), (471, 60340), (628, 45255), (785, 36204), (862, 32970), (942, 30170), (1099, 25860), (1293, 21980), (1570, 18102), (1724, 16485), (1884, 15085), (2155, 13188), (2198, 12930), (2355, 12068), (2586, 10990), (3017, 9420), (3140, 9051), (3297, 8620), (4310, 6594), (4396, 6465), (4710, 6034), (5172, 5495)]