21373065

素因数分解:

$3^5\times 5^1\times 7^2\times {\mathrm{359}}^1$

素因数の和:393

約数の個数: 72

約数和(自身を含む): 44815680

約数和(自身を除く): 23442615

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 81, 105, 135, 147, 189, 243, 245, 315, 359, 405, 441, 567, 735, 945, 1077, 1215, 1323, 1701, 1795, 2205, 2513, 2835, 3231, 3969, 5385, 6615, 7539, 8505, 9693, 11907, 12565, 16155, 17591, 19845, 22617, 29079, 37695, 48465, 52773, 59535, 67851, 87237, 87955, 113085, 145395, 158319, 203553, 263865, 339255, 436185, 474957, 610659, 791595, 1017765, 1424871, 2374785, 3053295, 4274613, 7124355, 21373065]

約数ペア:

[(1, 21373065), (3, 7124355), (5, 4274613), (7, 3053295), (9, 2374785), (15, 1424871), (21, 1017765), (27, 791595), (35, 610659), (45, 474957), (49, 436185), (63, 339255), (81, 263865), (105, 203553), (135, 158319), (147, 145395), (189, 113085), (243, 87955), (245, 87237), (315, 67851), (359, 59535), (405, 52773), (441, 48465), (567, 37695), (735, 29079), (945, 22617), (1077, 19845), (1215, 17591), (1323, 16155), (1701, 12565), (1795, 11907), (2205, 9693), (2513, 8505), (2835, 7539), (3231, 6615), (3969, 5385)]