19690425

素因数分解:

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

素因数の和:991

約数の個数: 48

約数和(自身を含む): 37378560

約数和(自身を除く): 17688135

約数列:

[1, 3, 5, 9, 15, 25, 27, 31, 45, 75, 93, 135, 155, 225, 279, 465, 675, 775, 837, 941, 1395, 2325, 2823, 4185, 4705, 6975, 8469, 14115, 20925, 23525, 25407, 29171, 42345, 70575, 87513, 127035, 145855, 211725, 262539, 437565, 635175, 729275, 787617, 1312695, 2187825, 3938085, 6563475, 19690425]

約数ペア:

[(1, 19690425), (3, 6563475), (5, 3938085), (9, 2187825), (15, 1312695), (25, 787617), (27, 729275), (31, 635175), (45, 437565), (75, 262539), (93, 211725), (135, 145855), (155, 127035), (225, 87513), (279, 70575), (465, 42345), (675, 29171), (775, 25407), (837, 23525), (941, 20925), (1395, 14115), (2325, 8469), (2823, 6975), (4185, 4705)]