21000983955

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{10526809}}^1$

素因数の和:10526843

約数の個数: 32

約数和(自身を含む): 40422950400

約数和(自身を除く): 19421966445

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 105, 133, 285, 399, 665, 1995, 10526809, 31580427, 52634045, 73687663, 157902135, 200009371, 221062989, 368438315, 600028113, 1000046855, 1105314945, 1400065597, 3000140565, 4200196791, 7000327985, 21000983955]

約数ペア:

[(1, 21000983955), (3, 7000327985), (5, 4200196791), (7, 3000140565), (15, 1400065597), (19, 1105314945), (21, 1000046855), (35, 600028113), (57, 368438315), (95, 221062989), (105, 200009371), (133, 157902135), (285, 73687663), (399, 52634045), (665, 31580427), (1995, 10526809)]