18504980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{691}}^1$

素因数の和:816

約数の個数: 48

約数和(自身を含む): 42317184

約数和(自身を除く): 23812204

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 103, 130, 206, 260, 412, 515, 691, 1030, 1339, 1382, 2060, 2678, 2764, 3455, 5356, 6695, 6910, 8983, 13390, 13820, 17966, 26780, 35932, 44915, 71173, 89830, 142346, 179660, 284692, 355865, 711730, 925249, 1423460, 1850498, 3700996, 4626245, 9252490, 18504980]

約数ペア:

[(1, 18504980), (2, 9252490), (4, 4626245), (5, 3700996), (10, 1850498), (13, 1423460), (20, 925249), (26, 711730), (52, 355865), (65, 284692), (103, 179660), (130, 142346), (206, 89830), (260, 71173), (412, 44915), (515, 35932), (691, 26780), (1030, 17966), (1339, 13820), (1382, 13390), (2060, 8983), (2678, 6910), (2764, 6695), (3455, 5356)]