21719355

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{3391}}^1$

素因数の和:3467

約数の個数: 32

約数和(自身を含む): 40378368

約数和(自身を除く): 18659013

約数列:

[1, 3, 5, 7, 15, 21, 35, 61, 105, 183, 305, 427, 915, 1281, 2135, 3391, 6405, 10173, 16955, 23737, 50865, 71211, 118685, 206851, 356055, 620553, 1034255, 1447957, 3102765, 4343871, 7239785, 21719355]

約数ペア:

[(1, 21719355), (3, 7239785), (5, 4343871), (7, 3102765), (15, 1447957), (21, 1034255), (35, 620553), (61, 356055), (105, 206851), (183, 118685), (305, 71211), (427, 50865), (915, 23737), (1281, 16955), (2135, 10173), (3391, 6405)]