821497180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{35999}}^1$

素因数の和:36178

約数の個数: 48

約数和(自身を含む): 1983744000

約数和(自身を除く): 1162246820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 163, 326, 652, 815, 1141, 1630, 2282, 3260, 4564, 5705, 11410, 22820, 35999, 71998, 143996, 179995, 251993, 359990, 503986, 719980, 1007972, 1259965, 2519930, 5039860, 5867837, 11735674, 23471348, 29339185, 41074859, 58678370, 82149718, 117356740, 164299436, 205374295, 410748590, 821497180]

約数ペア:

[(1, 821497180), (2, 410748590), (4, 205374295), (5, 164299436), (7, 117356740), (10, 82149718), (14, 58678370), (20, 41074859), (28, 29339185), (35, 23471348), (70, 11735674), (140, 5867837), (163, 5039860), (326, 2519930), (652, 1259965), (815, 1007972), (1141, 719980), (1630, 503986), (2282, 359990), (3260, 251993), (4564, 179995), (5705, 143996), (11410, 71998), (22820, 35999)]