19859488

素因数分解:

$2^5\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{223}}^1$

素因数の和:278

約数の個数: 72

約数和(自身を含む): 45045504

約数和(自身を除く): 25186016

約数列:

[1, 2, 4, 8, 11, 16, 22, 23, 32, 44, 46, 88, 92, 121, 176, 184, 223, 242, 253, 352, 368, 446, 484, 506, 736, 892, 968, 1012, 1784, 1936, 2024, 2453, 2783, 3568, 3872, 4048, 4906, 5129, 5566, 7136, 8096, 9812, 10258, 11132, 19624, 20516, 22264, 26983, 39248, 41032, 44528, 53966, 56419, 78496, 82064, 89056, 107932, 112838, 164128, 215864, 225676, 431728, 451352, 620609, 863456, 902704, 1241218, 1805408, 2482436, 4964872, 9929744, 19859488]

約数ペア:

[(1, 19859488), (2, 9929744), (4, 4964872), (8, 2482436), (11, 1805408), (16, 1241218), (22, 902704), (23, 863456), (32, 620609), (44, 451352), (46, 431728), (88, 225676), (92, 215864), (121, 164128), (176, 112838), (184, 107932), (223, 89056), (242, 82064), (253, 78496), (352, 56419), (368, 53966), (446, 44528), (484, 41032), (506, 39248), (736, 26983), (892, 22264), (968, 20516), (1012, 19624), (1784, 11132), (1936, 10258), (2024, 9812), (2453, 8096), (2783, 7136), (3568, 5566), (3872, 5129), (4048, 4906)]