18919890

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{659}}^1$

素因数の和:712

約数の個数: 96

約数和(自身を含む): 55598400

約数和(自身を除く): 36678510

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 29, 30, 33, 45, 55, 58, 66, 87, 90, 99, 110, 145, 165, 174, 198, 261, 290, 319, 330, 435, 495, 522, 638, 659, 870, 957, 990, 1305, 1318, 1595, 1914, 1977, 2610, 2871, 3190, 3295, 3954, 4785, 5742, 5931, 6590, 7249, 9570, 9885, 11862, 14355, 14498, 19111, 19770, 21747, 28710, 29655, 36245, 38222, 43494, 57333, 59310, 65241, 72490, 95555, 108735, 114666, 130482, 171999, 191110, 210221, 217470, 286665, 326205, 343998, 420442, 573330, 630663, 652410, 859995, 1051105, 1261326, 1719990, 1891989, 2102210, 3153315, 3783978, 6306630, 9459945, 18919890]

約数ペア:

[(1, 18919890), (2, 9459945), (3, 6306630), (5, 3783978), (6, 3153315), (9, 2102210), (10, 1891989), (11, 1719990), (15, 1261326), (18, 1051105), (22, 859995), (29, 652410), (30, 630663), (33, 573330), (45, 420442), (55, 343998), (58, 326205), (66, 286665), (87, 217470), (90, 210221), (99, 191110), (110, 171999), (145, 130482), (165, 114666), (174, 108735), (198, 95555), (261, 72490), (290, 65241), (319, 59310), (330, 57333), (435, 43494), (495, 38222), (522, 36245), (638, 29655), (659, 28710), (870, 21747), (957, 19770), (990, 19111), (1305, 14498), (1318, 14355), (1595, 11862), (1914, 9885), (1977, 9570), (2610, 7249), (2871, 6590), (3190, 5931), (3295, 5742), (3954, 4785)]