19507215

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{461}}^1$

素因数の和:520

約数の個数: 64

約数和(自身を含む): 39739392

約数和(自身を除く): 20232177

約数列:

[1, 3, 5, 7, 13, 15, 21, 31, 35, 39, 65, 91, 93, 105, 155, 195, 217, 273, 403, 455, 461, 465, 651, 1085, 1209, 1365, 1383, 2015, 2305, 2821, 3227, 3255, 5993, 6045, 6915, 8463, 9681, 14105, 14291, 16135, 17979, 29965, 41951, 42315, 42873, 48405, 71455, 89895, 100037, 125853, 185783, 209755, 214365, 300111, 500185, 557349, 629265, 928915, 1300481, 1500555, 2786745, 3901443, 6502405, 19507215]

約数ペア:

[(1, 19507215), (3, 6502405), (5, 3901443), (7, 2786745), (13, 1500555), (15, 1300481), (21, 928915), (31, 629265), (35, 557349), (39, 500185), (65, 300111), (91, 214365), (93, 209755), (105, 185783), (155, 125853), (195, 100037), (217, 89895), (273, 71455), (403, 48405), (455, 42873), (461, 42315), (465, 41951), (651, 29965), (1085, 17979), (1209, 16135), (1365, 14291), (1383, 14105), (2015, 9681), (2305, 8463), (2821, 6915), (3227, 6045), (3255, 5993)]