31191930

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{643}}^1$

素因数の和:681

約数の個数: 144

約数和(自身を含む): 103076064

約数和(自身を除く): 71884134

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 11, 14, 15, 18, 21, 22, 30, 33, 35, 42, 45, 49, 55, 63, 66, 70, 77, 90, 98, 99, 105, 110, 126, 147, 154, 165, 198, 210, 231, 245, 294, 315, 330, 385, 441, 462, 490, 495, 539, 630, 643, 693, 735, 770, 882, 990, 1078, 1155, 1286, 1386, 1470, 1617, 1929, 2205, 2310, 2695, 3215, 3234, 3465, 3858, 4410, 4501, 4851, 5390, 5787, 6430, 6930, 7073, 8085, 9002, 9645, 9702, 11574, 13503, 14146, 16170, 19290, 21219, 22505, 24255, 27006, 28935, 31507, 35365, 40509, 42438, 45010, 48510, 49511, 57870, 63014, 63657, 67515, 70730, 81018, 94521, 99022, 106095, 127314, 135030, 148533, 157535, 189042, 202545, 212190, 247555, 283563, 297066, 315070, 318285, 346577, 405090, 445599, 472605, 495110, 567126, 636570, 693154, 742665, 891198, 945210, 1039731, 1417815, 1485330, 1732885, 2079462, 2227995, 2835630, 3119193, 3465770, 4455990, 5198655, 6238386, 10397310, 15595965, 31191930]

約数ペア:

[(1, 31191930), (2, 15595965), (3, 10397310), (5, 6238386), (6, 5198655), (7, 4455990), (9, 3465770), (10, 3119193), (11, 2835630), (14, 2227995), (15, 2079462), (18, 1732885), (21, 1485330), (22, 1417815), (30, 1039731), (33, 945210), (35, 891198), (42, 742665), (45, 693154), (49, 636570), (55, 567126), (63, 495110), (66, 472605), (70, 445599), (77, 405090), (90, 346577), (98, 318285), (99, 315070), (105, 297066), (110, 283563), (126, 247555), (147, 212190), (154, 202545), (165, 189042), (198, 157535), (210, 148533), (231, 135030), (245, 127314), (294, 106095), (315, 99022), (330, 94521), (385, 81018), (441, 70730), (462, 67515), (490, 63657), (495, 63014), (539, 57870), (630, 49511), (643, 48510), (693, 45010), (735, 42438), (770, 40509), (882, 35365), (990, 31507), (1078, 28935), (1155, 27006), (1286, 24255), (1386, 22505), (1470, 21219), (1617, 19290), (1929, 16170), (2205, 14146), (2310, 13503), (2695, 11574), (3215, 9702), (3234, 9645), (3465, 9002), (3858, 8085), (4410, 7073), (4501, 6930), (4851, 6430), (5390, 5787)]