81947760

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{17971}}^1$

素因数の和:18006

約数の個数: 80

約数和(自身を含む): 267423360

約数和(自身を除く): 185475600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 38, 40, 48, 57, 60, 76, 80, 95, 114, 120, 152, 190, 228, 240, 285, 304, 380, 456, 570, 760, 912, 1140, 1520, 2280, 4560, 17971, 35942, 53913, 71884, 89855, 107826, 143768, 179710, 215652, 269565, 287536, 341449, 359420, 431304, 539130, 682898, 718840, 862608, 1024347, 1078260, 1365796, 1437680, 1707245, 2048694, 2156520, 2731592, 3414490, 4097388, 4313040, 5121735, 5463184, 6828980, 8194776, 10243470, 13657960, 16389552, 20486940, 27315920, 40973880, 81947760]

約数ペア:

[(1, 81947760), (2, 40973880), (3, 27315920), (4, 20486940), (5, 16389552), (6, 13657960), (8, 10243470), (10, 8194776), (12, 6828980), (15, 5463184), (16, 5121735), (19, 4313040), (20, 4097388), (24, 3414490), (30, 2731592), (38, 2156520), (40, 2048694), (48, 1707245), (57, 1437680), (60, 1365796), (76, 1078260), (80, 1024347), (95, 862608), (114, 718840), (120, 682898), (152, 539130), (190, 431304), (228, 359420), (240, 341449), (285, 287536), (304, 269565), (380, 215652), (456, 179710), (570, 143768), (760, 107826), (912, 89855), (1140, 71884), (1520, 53913), (2280, 35942), (4560, 17971)]