19157775

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{401}}^1$

素因数の和:441

約数の個数: 72

約数和(自身を含む): 39778704

約数和(自身を除く): 20620929

約数列:

[1, 3, 5, 7, 13, 15, 21, 25, 35, 39, 49, 65, 75, 91, 105, 147, 175, 195, 245, 273, 325, 401, 455, 525, 637, 735, 975, 1203, 1225, 1365, 1911, 2005, 2275, 2807, 3185, 3675, 5213, 6015, 6825, 8421, 9555, 10025, 14035, 15639, 15925, 19649, 26065, 30075, 36491, 42105, 47775, 58947, 70175, 78195, 98245, 109473, 130325, 182455, 210525, 255437, 294735, 390975, 491225, 547365, 766311, 912275, 1277185, 1473675, 2736825, 3831555, 6385925, 19157775]

約数ペア:

[(1, 19157775), (3, 6385925), (5, 3831555), (7, 2736825), (13, 1473675), (15, 1277185), (21, 912275), (25, 766311), (35, 547365), (39, 491225), (49, 390975), (65, 294735), (75, 255437), (91, 210525), (105, 182455), (147, 130325), (175, 109473), (195, 98245), (245, 78195), (273, 70175), (325, 58947), (401, 47775), (455, 42105), (525, 36491), (637, 30075), (735, 26065), (975, 19649), (1203, 15925), (1225, 15639), (1365, 14035), (1911, 10025), (2005, 9555), (2275, 8421), (2807, 6825), (3185, 6015), (3675, 5213)]