991234090

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1\times {\mathrm{227}}^1$

素因数の和:412

約数の個数: 128

約数和(自身を含む): 2297714688

約数和(自身を除く): 1306480598

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 53, 55, 70, 77, 106, 107, 110, 154, 214, 227, 265, 371, 385, 454, 530, 535, 583, 742, 749, 770, 1070, 1135, 1166, 1177, 1498, 1589, 1855, 2270, 2354, 2497, 2915, 3178, 3710, 3745, 4081, 4994, 5671, 5830, 5885, 7490, 7945, 8162, 8239, 11342, 11770, 12031, 12485, 15890, 16478, 17479, 20405, 24062, 24289, 24970, 28355, 34958, 39697, 40810, 41195, 48578, 56710, 60155, 62381, 79394, 82390, 84217, 87395, 120310, 121445, 124762, 132341, 168434, 170023, 174790, 198485, 242890, 264682, 267179, 311905, 340046, 396970, 421085, 436667, 534358, 623810, 661705, 842170, 850115, 873334, 926387, 1287317, 1323410, 1335895, 1700230, 1852774, 1870253, 2183335, 2574634, 2671790, 3740506, 4366670, 4631935, 6436585, 9011219, 9263870, 9351265, 12873170, 14160487, 18022438, 18702530, 28320974, 45056095, 70802435, 90112190, 99123409, 141604870, 198246818, 495617045, 991234090]

約数ペア:

[(1, 991234090), (2, 495617045), (5, 198246818), (7, 141604870), (10, 99123409), (11, 90112190), (14, 70802435), (22, 45056095), (35, 28320974), (53, 18702530), (55, 18022438), (70, 14160487), (77, 12873170), (106, 9351265), (107, 9263870), (110, 9011219), (154, 6436585), (214, 4631935), (227, 4366670), (265, 3740506), (371, 2671790), (385, 2574634), (454, 2183335), (530, 1870253), (535, 1852774), (583, 1700230), (742, 1335895), (749, 1323410), (770, 1287317), (1070, 926387), (1135, 873334), (1166, 850115), (1177, 842170), (1498, 661705), (1589, 623810), (1855, 534358), (2270, 436667), (2354, 421085), (2497, 396970), (2915, 340046), (3178, 311905), (3710, 267179), (3745, 264682), (4081, 242890), (4994, 198485), (5671, 174790), (5830, 170023), (5885, 168434), (7490, 132341), (7945, 124762), (8162, 121445), (8239, 120310), (11342, 87395), (11770, 84217), (12031, 82390), (12485, 79394), (15890, 62381), (16478, 60155), (17479, 56710), (20405, 48578), (24062, 41195), (24289, 40810), (24970, 39697), (28355, 34958)]