21864890

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{3137}}^1$

素因数の和:3202

約数の個数: 32

約数和(自身を含む): 42701904

約数和(自身を除く): 20837014

約数列:

[1, 2, 5, 10, 17, 34, 41, 82, 85, 170, 205, 410, 697, 1394, 3137, 3485, 6274, 6970, 15685, 31370, 53329, 106658, 128617, 257234, 266645, 533290, 643085, 1286170, 2186489, 4372978, 10932445, 21864890]

約数ペア:

[(1, 21864890), (2, 10932445), (5, 4372978), (10, 2186489), (17, 1286170), (34, 643085), (41, 533290), (82, 266645), (85, 257234), (170, 128617), (205, 106658), (410, 53329), (697, 31370), (1394, 15685), (3137, 6970), (3485, 6274)]