21383830

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{1597}}^1$

素因数の和:1720

約数の個数: 32

約数和(自身を含む): 41880384

約数和(自身を除く): 20496554

約数列:

[1, 2, 5, 10, 13, 26, 65, 103, 130, 206, 515, 1030, 1339, 1597, 2678, 3194, 6695, 7985, 13390, 15970, 20761, 41522, 103805, 164491, 207610, 328982, 822455, 1644910, 2138383, 4276766, 10691915, 21383830]

約数ペア:

[(1, 21383830), (2, 10691915), (5, 4276766), (10, 2138383), (13, 1644910), (26, 822455), (65, 328982), (103, 207610), (130, 164491), (206, 103805), (515, 41522), (1030, 20761), (1339, 15970), (1597, 13390), (2678, 7985), (3194, 6695)]