20271225

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1223}}^1$

素因数の和:1266

約数の個数: 48

約数和(自身を含む): 38247552

約数和(自身を除く): 17976327

約数列:

[1, 3, 5, 13, 15, 17, 25, 39, 51, 65, 75, 85, 195, 221, 255, 325, 425, 663, 975, 1105, 1223, 1275, 3315, 3669, 5525, 6115, 15899, 16575, 18345, 20791, 30575, 47697, 62373, 79495, 91725, 103955, 238485, 270283, 311865, 397475, 519775, 810849, 1192425, 1351415, 1559325, 4054245, 6757075, 20271225]

約数ペア:

[(1, 20271225), (3, 6757075), (5, 4054245), (13, 1559325), (15, 1351415), (17, 1192425), (25, 810849), (39, 519775), (51, 397475), (65, 311865), (75, 270283), (85, 238485), (195, 103955), (221, 91725), (255, 79495), (325, 62373), (425, 47697), (663, 30575), (975, 20791), (1105, 18345), (1223, 16575), (1275, 15899), (3315, 6115), (3669, 5525)]