18291920

素因数分解:

$2^4\times 5^1\times {\mathrm{373}}^1\times {\mathrm{613}}^1$

素因数の和:999

約数の個数: 40

約数和(自身を含む): 42712296

約数和(自身を除く): 24420376

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 373, 613, 746, 1226, 1492, 1865, 2452, 2984, 3065, 3730, 4904, 5968, 6130, 7460, 9808, 12260, 14920, 24520, 29840, 49040, 228649, 457298, 914596, 1143245, 1829192, 2286490, 3658384, 4572980, 9145960, 18291920]

約数ペア:

[(1, 18291920), (2, 9145960), (4, 4572980), (5, 3658384), (8, 2286490), (10, 1829192), (16, 1143245), (20, 914596), (40, 457298), (80, 228649), (373, 49040), (613, 29840), (746, 24520), (1226, 14920), (1492, 12260), (1865, 9808), (2452, 7460), (2984, 6130), (3065, 5968), (3730, 4904)]