216860020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{6367}}^1$

素因数の和:6520

約数の個数: 48

約数和(自身を含む): 494258688

約数和(自身を除く): 277398668

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 131, 260, 262, 524, 655, 1310, 1703, 2620, 3406, 6367, 6812, 8515, 12734, 17030, 25468, 31835, 34060, 63670, 82771, 127340, 165542, 331084, 413855, 827710, 834077, 1655420, 1668154, 3336308, 4170385, 8340770, 10843001, 16681540, 21686002, 43372004, 54215005, 108430010, 216860020]

約数ペア:

[(1, 216860020), (2, 108430010), (4, 54215005), (5, 43372004), (10, 21686002), (13, 16681540), (20, 10843001), (26, 8340770), (52, 4170385), (65, 3336308), (130, 1668154), (131, 1655420), (260, 834077), (262, 827710), (524, 413855), (655, 331084), (1310, 165542), (1703, 127340), (2620, 82771), (3406, 63670), (6367, 34060), (6812, 31835), (8515, 25468), (12734, 17030)]