81077940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{157}}^1$

素因数の和:342

約数の個数: 144

約数和(自身を含む): 262254720

約数和(自身を除く): 181176780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 151, 157, 171, 180, 190, 228, 285, 302, 314, 342, 380, 453, 471, 570, 604, 628, 684, 755, 785, 855, 906, 942, 1140, 1359, 1413, 1510, 1570, 1710, 1812, 1884, 2265, 2355, 2718, 2826, 2869, 2983, 3020, 3140, 3420, 4530, 4710, 5436, 5652, 5738, 5966, 6795, 7065, 8607, 8949, 9060, 9420, 11476, 11932, 13590, 14130, 14345, 14915, 17214, 17898, 23707, 25821, 26847, 27180, 28260, 28690, 29830, 34428, 35796, 43035, 44745, 47414, 51642, 53694, 57380, 59660, 71121, 86070, 89490, 94828, 103284, 107388, 118535, 129105, 134235, 142242, 172140, 178980, 213363, 237070, 258210, 268470, 284484, 355605, 426726, 450433, 474140, 516420, 536940, 711210, 853452, 900866, 1066815, 1351299, 1422420, 1801732, 2133630, 2252165, 2702598, 4053897, 4267260, 4504330, 5405196, 6756495, 8107794, 9008660, 13512990, 16215588, 20269485, 27025980, 40538970, 81077940]

約数ペア:

[(1, 81077940), (2, 40538970), (3, 27025980), (4, 20269485), (5, 16215588), (6, 13512990), (9, 9008660), (10, 8107794), (12, 6756495), (15, 5405196), (18, 4504330), (19, 4267260), (20, 4053897), (30, 2702598), (36, 2252165), (38, 2133630), (45, 1801732), (57, 1422420), (60, 1351299), (76, 1066815), (90, 900866), (95, 853452), (114, 711210), (151, 536940), (157, 516420), (171, 474140), (180, 450433), (190, 426726), (228, 355605), (285, 284484), (302, 268470), (314, 258210), (342, 237070), (380, 213363), (453, 178980), (471, 172140), (570, 142242), (604, 134235), (628, 129105), (684, 118535), (755, 107388), (785, 103284), (855, 94828), (906, 89490), (942, 86070), (1140, 71121), (1359, 59660), (1413, 57380), (1510, 53694), (1570, 51642), (1710, 47414), (1812, 44745), (1884, 43035), (2265, 35796), (2355, 34428), (2718, 29830), (2826, 28690), (2869, 28260), (2983, 27180), (3020, 26847), (3140, 25821), (3420, 23707), (4530, 17898), (4710, 17214), (5436, 14915), (5652, 14345), (5738, 14130), (5966, 13590), (6795, 11932), (7065, 11476), (8607, 9420), (8949, 9060)]