18996735

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:168

約数の個数: 64

約数和(自身を含む): 34836480

約数和(自身を除く): 15839745

約数列:

[1, 3, 5, 15, 17, 23, 41, 51, 69, 79, 85, 115, 123, 205, 237, 255, 345, 391, 395, 615, 697, 943, 1173, 1185, 1343, 1817, 1955, 2091, 2829, 3239, 3485, 4029, 4715, 5451, 5865, 6715, 9085, 9717, 10455, 14145, 16031, 16195, 20145, 27255, 30889, 48093, 48585, 55063, 74497, 80155, 92667, 154445, 165189, 223491, 240465, 275315, 372485, 463335, 825945, 1117455, 1266449, 3799347, 6332245, 18996735]

約数ペア:

[(1, 18996735), (3, 6332245), (5, 3799347), (15, 1266449), (17, 1117455), (23, 825945), (41, 463335), (51, 372485), (69, 275315), (79, 240465), (85, 223491), (115, 165189), (123, 154445), (205, 92667), (237, 80155), (255, 74497), (345, 55063), (391, 48585), (395, 48093), (615, 30889), (697, 27255), (943, 20145), (1173, 16195), (1185, 16031), (1343, 14145), (1817, 10455), (1955, 9717), (2091, 9085), (2829, 6715), (3239, 5865), (3485, 5451), (4029, 4715)]