19705088

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{191}}^1$

素因数の和:251

約数の個数: 72

約数和(自身を含む): 43954176

約数和(自身を除く): 24249088

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 52, 62, 64, 104, 124, 128, 191, 208, 248, 256, 382, 403, 416, 496, 764, 806, 832, 992, 1528, 1612, 1664, 1984, 2483, 3056, 3224, 3328, 3968, 4966, 5921, 6112, 6448, 7936, 9932, 11842, 12224, 12896, 19864, 23684, 24448, 25792, 39728, 47368, 48896, 51584, 76973, 79456, 94736, 103168, 153946, 158912, 189472, 307892, 317824, 378944, 615784, 635648, 757888, 1231568, 1515776, 2463136, 4926272, 9852544, 19705088]

約数ペア:

[(1, 19705088), (2, 9852544), (4, 4926272), (8, 2463136), (13, 1515776), (16, 1231568), (26, 757888), (31, 635648), (32, 615784), (52, 378944), (62, 317824), (64, 307892), (104, 189472), (124, 158912), (128, 153946), (191, 103168), (208, 94736), (248, 79456), (256, 76973), (382, 51584), (403, 48896), (416, 47368), (496, 39728), (764, 25792), (806, 24448), (832, 23684), (992, 19864), (1528, 12896), (1612, 12224), (1664, 11842), (1984, 9932), (2483, 7936), (3056, 6448), (3224, 6112), (3328, 5921), (3968, 4966)]