212121784

素因数分解:

$2^3\times 7^2\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{229}}^1$

素因数の和:405

約数の個数: 96

約数和(自身を含む): 495558000

約数和(自身を除く): 283436216

約数列:

[1, 2, 4, 7, 8, 14, 17, 28, 34, 49, 56, 68, 98, 119, 136, 139, 196, 229, 238, 278, 392, 458, 476, 556, 833, 916, 952, 973, 1112, 1603, 1666, 1832, 1946, 2363, 3206, 3332, 3892, 3893, 4726, 6412, 6664, 6811, 7784, 7786, 9452, 11221, 12824, 13622, 15572, 16541, 18904, 22442, 27244, 27251, 31144, 31831, 33082, 44884, 54488, 54502, 63662, 66164, 89768, 109004, 115787, 127324, 132328, 190757, 218008, 222817, 231574, 254648, 381514, 445634, 463148, 541127, 763028, 891268, 926296, 1082254, 1526056, 1559719, 1782536, 2164508, 3119438, 3787889, 4329016, 6238876, 7575778, 12477752, 15151556, 26515223, 30303112, 53030446, 106060892, 212121784]

約数ペア:

[(1, 212121784), (2, 106060892), (4, 53030446), (7, 30303112), (8, 26515223), (14, 15151556), (17, 12477752), (28, 7575778), (34, 6238876), (49, 4329016), (56, 3787889), (68, 3119438), (98, 2164508), (119, 1782536), (136, 1559719), (139, 1526056), (196, 1082254), (229, 926296), (238, 891268), (278, 763028), (392, 541127), (458, 463148), (476, 445634), (556, 381514), (833, 254648), (916, 231574), (952, 222817), (973, 218008), (1112, 190757), (1603, 132328), (1666, 127324), (1832, 115787), (1946, 109004), (2363, 89768), (3206, 66164), (3332, 63662), (3892, 54502), (3893, 54488), (4726, 44884), (6412, 33082), (6664, 31831), (6811, 31144), (7784, 27251), (7786, 27244), (9452, 22442), (11221, 18904), (12824, 16541), (13622, 15572)]