18894225

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1$

素因数の和:139

約数の個数: 96

約数和(自身を含む): 39640320

約数和(自身を除く): 20746095

約数列:

[1, 3, 5, 7, 15, 17, 21, 25, 29, 35, 51, 73, 75, 85, 87, 105, 119, 145, 175, 203, 219, 255, 357, 365, 425, 435, 493, 511, 525, 595, 609, 725, 1015, 1095, 1241, 1275, 1479, 1533, 1785, 1825, 2117, 2175, 2465, 2555, 2975, 3045, 3451, 3723, 5075, 5475, 6205, 6351, 7395, 7665, 8687, 8925, 10353, 10585, 12325, 12775, 14819, 15225, 17255, 18615, 26061, 31025, 31755, 35989, 36975, 38325, 43435, 44457, 51765, 52925, 74095, 86275, 93075, 107967, 130305, 158775, 179945, 217175, 222285, 251923, 258825, 370475, 539835, 651525, 755769, 899725, 1111425, 1259615, 2699175, 3778845, 6298075, 18894225]

約数ペア:

[(1, 18894225), (3, 6298075), (5, 3778845), (7, 2699175), (15, 1259615), (17, 1111425), (21, 899725), (25, 755769), (29, 651525), (35, 539835), (51, 370475), (73, 258825), (75, 251923), (85, 222285), (87, 217175), (105, 179945), (119, 158775), (145, 130305), (175, 107967), (203, 93075), (219, 86275), (255, 74095), (357, 52925), (365, 51765), (425, 44457), (435, 43435), (493, 38325), (511, 36975), (525, 35989), (595, 31755), (609, 31025), (725, 26061), (1015, 18615), (1095, 17255), (1241, 15225), (1275, 14819), (1479, 12775), (1533, 12325), (1785, 10585), (1825, 10353), (2117, 8925), (2175, 8687), (2465, 7665), (2555, 7395), (2975, 6351), (3045, 6205), (3451, 5475), (3723, 5075)]