78391980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{269}}^1\times {\mathrm{1619}}^1$

素因数の和:1903

約数の個数: 72

約数和(自身を含む): 238820400

約数和(自身を除く): 160428420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 269, 538, 807, 1076, 1345, 1614, 1619, 2421, 2690, 3228, 3238, 4035, 4842, 4857, 5380, 6476, 8070, 8095, 9684, 9714, 12105, 14571, 16140, 16190, 19428, 24210, 24285, 29142, 32380, 48420, 48570, 58284, 72855, 97140, 145710, 291420, 435511, 871022, 1306533, 1742044, 2177555, 2613066, 3919599, 4355110, 5226132, 6532665, 7839198, 8710220, 13065330, 15678396, 19597995, 26130660, 39195990, 78391980]

約数ペア:

[(1, 78391980), (2, 39195990), (3, 26130660), (4, 19597995), (5, 15678396), (6, 13065330), (9, 8710220), (10, 7839198), (12, 6532665), (15, 5226132), (18, 4355110), (20, 3919599), (30, 2613066), (36, 2177555), (45, 1742044), (60, 1306533), (90, 871022), (180, 435511), (269, 291420), (538, 145710), (807, 97140), (1076, 72855), (1345, 58284), (1614, 48570), (1619, 48420), (2421, 32380), (2690, 29142), (3228, 24285), (3238, 24210), (4035, 19428), (4842, 16190), (4857, 16140), (5380, 14571), (6476, 12105), (8070, 9714), (8095, 9684)]