18806940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{641}}^1$

素因数の和:819

約数の個数: 72

約数和(自身を含む): 57487248

約数和(自身を除く): 38680308

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 163, 180, 326, 489, 641, 652, 815, 978, 1282, 1467, 1630, 1923, 1956, 2445, 2564, 2934, 3205, 3260, 3846, 4890, 5769, 5868, 6410, 7335, 7692, 9615, 9780, 11538, 12820, 14670, 19230, 23076, 28845, 29340, 38460, 57690, 104483, 115380, 208966, 313449, 417932, 522415, 626898, 940347, 1044830, 1253796, 1567245, 1880694, 2089660, 3134490, 3761388, 4701735, 6268980, 9403470, 18806940]

約数ペア:

[(1, 18806940), (2, 9403470), (3, 6268980), (4, 4701735), (5, 3761388), (6, 3134490), (9, 2089660), (10, 1880694), (12, 1567245), (15, 1253796), (18, 1044830), (20, 940347), (30, 626898), (36, 522415), (45, 417932), (60, 313449), (90, 208966), (163, 115380), (180, 104483), (326, 57690), (489, 38460), (641, 29340), (652, 28845), (815, 23076), (978, 19230), (1282, 14670), (1467, 12820), (1630, 11538), (1923, 9780), (1956, 9615), (2445, 7692), (2564, 7335), (2934, 6410), (3205, 5868), (3260, 5769), (3846, 4890)]