20729970

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{797}}^1$

素因数の和:844

約数の個数: 72

約数和(自身を含む): 57326724

約数和(自身を除く): 36596754

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 17, 18, 30, 34, 45, 51, 85, 90, 102, 153, 170, 255, 289, 306, 510, 578, 765, 797, 867, 1445, 1530, 1594, 1734, 2391, 2601, 2890, 3985, 4335, 4782, 5202, 7173, 7970, 8670, 11955, 13005, 13549, 14346, 23910, 26010, 27098, 35865, 40647, 67745, 71730, 81294, 121941, 135490, 203235, 230333, 243882, 406470, 460666, 609705, 690999, 1151665, 1219410, 1381998, 2072997, 2303330, 3454995, 4145994, 6909990, 10364985, 20729970]

約数ペア:

[(1, 20729970), (2, 10364985), (3, 6909990), (5, 4145994), (6, 3454995), (9, 2303330), (10, 2072997), (15, 1381998), (17, 1219410), (18, 1151665), (30, 690999), (34, 609705), (45, 460666), (51, 406470), (85, 243882), (90, 230333), (102, 203235), (153, 135490), (170, 121941), (255, 81294), (289, 71730), (306, 67745), (510, 40647), (578, 35865), (765, 27098), (797, 26010), (867, 23910), (1445, 14346), (1530, 13549), (1594, 13005), (1734, 11955), (2391, 8670), (2601, 7970), (2890, 7173), (3985, 5202), (4335, 4782)]