21872955

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{503}}^1$

素因数の和:747

約数の個数: 32

約数和(自身を含む): 37933056

約数和(自身を除く): 16060101

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 223, 503, 669, 1115, 1509, 2515, 2899, 3345, 6539, 7545, 8697, 14495, 19617, 32695, 43485, 98085, 112169, 336507, 560845, 1458197, 1682535, 4374591, 7290985, 21872955]

約数ペア:

[(1, 21872955), (3, 7290985), (5, 4374591), (13, 1682535), (15, 1458197), (39, 560845), (65, 336507), (195, 112169), (223, 98085), (503, 43485), (669, 32695), (1115, 19617), (1509, 14495), (2515, 8697), (2899, 7545), (3345, 6539)]