18744770

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1$

素因数の和:311

約数の個数: 64

約数和(自身を含む): 39813120

約数和(自身を除く): 21068350

約数列:

[1, 2, 5, 10, 11, 22, 23, 31, 46, 55, 62, 110, 115, 155, 230, 239, 253, 310, 341, 478, 506, 682, 713, 1195, 1265, 1426, 1705, 2390, 2530, 2629, 3410, 3565, 5258, 5497, 7130, 7409, 7843, 10994, 13145, 14818, 15686, 26290, 27485, 37045, 39215, 54970, 60467, 74090, 78430, 81499, 120934, 162998, 170407, 302335, 340814, 407495, 604670, 814990, 852035, 1704070, 1874477, 3748954, 9372385, 18744770]

約数ペア:

[(1, 18744770), (2, 9372385), (5, 3748954), (10, 1874477), (11, 1704070), (22, 852035), (23, 814990), (31, 604670), (46, 407495), (55, 340814), (62, 302335), (110, 170407), (115, 162998), (155, 120934), (230, 81499), (239, 78430), (253, 74090), (310, 60467), (341, 54970), (478, 39215), (506, 37045), (682, 27485), (713, 26290), (1195, 15686), (1265, 14818), (1426, 13145), (1705, 10994), (2390, 7843), (2530, 7409), (2629, 7130), (3410, 5497), (3565, 5258)]