19218225

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{857}}^1$

素因数の和:906

約数の個数: 48

約数和(自身を含む): 35747712

約数和(自身を除く): 16529487

約数列:

[1, 3, 5, 13, 15, 23, 25, 39, 65, 69, 75, 115, 195, 299, 325, 345, 575, 857, 897, 975, 1495, 1725, 2571, 4285, 4485, 7475, 11141, 12855, 19711, 21425, 22425, 33423, 55705, 59133, 64275, 98555, 167115, 256243, 278525, 295665, 492775, 768729, 835575, 1281215, 1478325, 3843645, 6406075, 19218225]

約数ペア:

[(1, 19218225), (3, 6406075), (5, 3843645), (13, 1478325), (15, 1281215), (23, 835575), (25, 768729), (39, 492775), (65, 295665), (69, 278525), (75, 256243), (115, 167115), (195, 98555), (299, 64275), (325, 59133), (345, 55705), (575, 33423), (857, 22425), (897, 21425), (975, 19711), (1495, 12855), (1725, 11141), (2571, 7475), (4285, 4485)]