20310255

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{151}}^1$

素因数の和:237

約数の個数: 72

約数和(自身を含む): 41899104

約数和(自身を除く): 21588849

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 61, 63, 105, 147, 151, 183, 245, 305, 315, 427, 441, 453, 549, 735, 755, 915, 1057, 1281, 1359, 2135, 2205, 2265, 2745, 2989, 3171, 3843, 5285, 6405, 6795, 7399, 8967, 9211, 9513, 14945, 15855, 19215, 22197, 26901, 27633, 36995, 44835, 46055, 47565, 64477, 66591, 82899, 110985, 134505, 138165, 193431, 322385, 332955, 414495, 451339, 580293, 967155, 1354017, 2256695, 2901465, 4062051, 6770085, 20310255]

約数ペア:

[(1, 20310255), (3, 6770085), (5, 4062051), (7, 2901465), (9, 2256695), (15, 1354017), (21, 967155), (35, 580293), (45, 451339), (49, 414495), (61, 332955), (63, 322385), (105, 193431), (147, 138165), (151, 134505), (183, 110985), (245, 82899), (305, 66591), (315, 64477), (427, 47565), (441, 46055), (453, 44835), (549, 36995), (735, 27633), (755, 26901), (915, 22197), (1057, 19215), (1281, 15855), (1359, 14945), (2135, 9513), (2205, 9211), (2265, 8967), (2745, 7399), (2989, 6795), (3171, 6405), (3843, 5285)]