19499948

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{193}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 38784480

約数和(自身を除く): 19284532

約数列:

[1, 2, 4, 13, 26, 29, 52, 58, 67, 116, 134, 193, 268, 377, 386, 754, 772, 871, 1508, 1742, 1943, 2509, 3484, 3886, 5018, 5597, 7772, 10036, 11194, 12931, 22388, 25259, 25862, 50518, 51724, 72761, 101036, 145522, 168103, 291044, 336206, 374999, 672412, 749998, 1499996, 4874987, 9749974, 19499948]

約数ペア:

[(1, 19499948), (2, 9749974), (4, 4874987), (13, 1499996), (26, 749998), (29, 672412), (52, 374999), (58, 336206), (67, 291044), (116, 168103), (134, 145522), (193, 101036), (268, 72761), (377, 51724), (386, 50518), (754, 25862), (772, 25259), (871, 22388), (1508, 12931), (1742, 11194), (1943, 10036), (2509, 7772), (3484, 5597), (3886, 5018)]