28288715

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{787}}^1$

素因数の和:891

約数の個数: 32

約数和(自身を含む): 42362880

約数和(自身を除く): 14074165

約数列:

[1, 5, 7, 13, 35, 65, 79, 91, 395, 455, 553, 787, 1027, 2765, 3935, 5135, 5509, 7189, 10231, 27545, 35945, 51155, 62173, 71617, 310865, 358085, 435211, 808249, 2176055, 4041245, 5657743, 28288715]

約数ペア:

[(1, 28288715), (5, 5657743), (7, 4041245), (13, 2176055), (35, 808249), (65, 435211), (79, 358085), (91, 310865), (395, 71617), (455, 62173), (553, 51155), (787, 35945), (1027, 27545), (2765, 10231), (3935, 7189), (5135, 5509)]