21999948

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{2053}}^1$

素因数の和:2126

約数の個数: 48

約数和(自身を含む): 55211520

約数和(自身を除く): 33211572

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 47, 57, 76, 94, 114, 141, 188, 228, 282, 564, 893, 1786, 2053, 2679, 3572, 4106, 5358, 6159, 8212, 10716, 12318, 24636, 39007, 78014, 96491, 117021, 156028, 192982, 234042, 289473, 385964, 468084, 578946, 1157892, 1833329, 3666658, 5499987, 7333316, 10999974, 21999948]

約数ペア:

[(1, 21999948), (2, 10999974), (3, 7333316), (4, 5499987), (6, 3666658), (12, 1833329), (19, 1157892), (38, 578946), (47, 468084), (57, 385964), (76, 289473), (94, 234042), (114, 192982), (141, 156028), (188, 117021), (228, 96491), (282, 78014), (564, 39007), (893, 24636), (1786, 12318), (2053, 10716), (2679, 8212), (3572, 6159), (4106, 5358)]