21440685

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{941}}^1$

素因数の和:994

約数の個数: 48

約数和(自身を含む): 41236992

約数和(自身を除く): 19796307

約数列:

[1, 3, 5, 7, 15, 21, 31, 35, 49, 93, 105, 147, 155, 217, 245, 465, 651, 735, 941, 1085, 1519, 2823, 3255, 4557, 4705, 6587, 7595, 14115, 19761, 22785, 29171, 32935, 46109, 87513, 98805, 138327, 145855, 204197, 230545, 437565, 612591, 691635, 1020985, 1429379, 3062955, 4288137, 7146895, 21440685]

約数ペア:

[(1, 21440685), (3, 7146895), (5, 4288137), (7, 3062955), (15, 1429379), (21, 1020985), (31, 691635), (35, 612591), (49, 437565), (93, 230545), (105, 204197), (147, 145855), (155, 138327), (217, 98805), (245, 87513), (465, 46109), (651, 32935), (735, 29171), (941, 22785), (1085, 19761), (1519, 14115), (2823, 7595), (3255, 6587), (4557, 4705)]