81656610

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{257}}^1$

素因数の和:380

約数の個数: 128

約数和(自身を含む): 240744960

約数和(自身を除く): 159088350

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 17, 21, 30, 34, 35, 42, 51, 70, 85, 89, 102, 105, 119, 170, 178, 210, 238, 255, 257, 267, 357, 445, 510, 514, 534, 595, 623, 714, 771, 890, 1190, 1246, 1285, 1335, 1513, 1542, 1785, 1799, 1869, 2570, 2670, 3026, 3115, 3570, 3598, 3738, 3855, 4369, 4539, 5397, 6230, 7565, 7710, 8738, 8995, 9078, 9345, 10591, 10794, 13107, 15130, 17990, 18690, 21182, 21845, 22695, 22873, 26214, 26985, 30583, 31773, 43690, 45390, 45746, 52955, 53970, 61166, 63546, 65535, 68619, 91749, 105910, 114365, 131070, 137238, 152915, 158865, 160111, 183498, 228730, 305830, 317730, 320222, 343095, 388841, 458745, 480333, 686190, 777682, 800555, 917490, 960666, 1166523, 1601110, 1944205, 2333046, 2401665, 2721887, 3888410, 4803330, 5443774, 5832615, 8165661, 11665230, 13609435, 16331322, 27218870, 40828305, 81656610]

約数ペア:

[(1, 81656610), (2, 40828305), (3, 27218870), (5, 16331322), (6, 13609435), (7, 11665230), (10, 8165661), (14, 5832615), (15, 5443774), (17, 4803330), (21, 3888410), (30, 2721887), (34, 2401665), (35, 2333046), (42, 1944205), (51, 1601110), (70, 1166523), (85, 960666), (89, 917490), (102, 800555), (105, 777682), (119, 686190), (170, 480333), (178, 458745), (210, 388841), (238, 343095), (255, 320222), (257, 317730), (267, 305830), (357, 228730), (445, 183498), (510, 160111), (514, 158865), (534, 152915), (595, 137238), (623, 131070), (714, 114365), (771, 105910), (890, 91749), (1190, 68619), (1246, 65535), (1285, 63546), (1335, 61166), (1513, 53970), (1542, 52955), (1785, 45746), (1799, 45390), (1869, 43690), (2570, 31773), (2670, 30583), (3026, 26985), (3115, 26214), (3570, 22873), (3598, 22695), (3738, 21845), (3855, 21182), (4369, 18690), (4539, 17990), (5397, 15130), (6230, 13107), (7565, 10794), (7710, 10591), (8738, 9345), (8995, 9078)]