21439080

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{509}}^1$

素因数の和:545

約数の個数: 160

約数和(自身を含む): 77754600

約数和(自身を除く): 56315520

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 27, 30, 36, 39, 40, 45, 52, 54, 60, 65, 72, 78, 81, 90, 104, 108, 117, 120, 130, 135, 156, 162, 180, 195, 216, 234, 260, 270, 312, 324, 351, 360, 390, 405, 468, 509, 520, 540, 585, 648, 702, 780, 810, 936, 1018, 1053, 1080, 1170, 1404, 1527, 1560, 1620, 1755, 2036, 2106, 2340, 2545, 2808, 3054, 3240, 3510, 4072, 4212, 4581, 4680, 5090, 5265, 6108, 6617, 7020, 7635, 8424, 9162, 10180, 10530, 12216, 13234, 13743, 14040, 15270, 18324, 19851, 20360, 21060, 22905, 26468, 27486, 30540, 33085, 36648, 39702, 41229, 42120, 45810, 52936, 54972, 59553, 61080, 66170, 68715, 79404, 82458, 91620, 99255, 109944, 119106, 132340, 137430, 158808, 164916, 178659, 183240, 198510, 206145, 238212, 264680, 274860, 297765, 329832, 357318, 397020, 412290, 476424, 535977, 549720, 595530, 714636, 794040, 824580, 893295, 1071954, 1191060, 1429272, 1649160, 1786590, 2143908, 2382120, 2679885, 3573180, 4287816, 5359770, 7146360, 10719540, 21439080]

約数ペア:

[(1, 21439080), (2, 10719540), (3, 7146360), (4, 5359770), (5, 4287816), (6, 3573180), (8, 2679885), (9, 2382120), (10, 2143908), (12, 1786590), (13, 1649160), (15, 1429272), (18, 1191060), (20, 1071954), (24, 893295), (26, 824580), (27, 794040), (30, 714636), (36, 595530), (39, 549720), (40, 535977), (45, 476424), (52, 412290), (54, 397020), (60, 357318), (65, 329832), (72, 297765), (78, 274860), (81, 264680), (90, 238212), (104, 206145), (108, 198510), (117, 183240), (120, 178659), (130, 164916), (135, 158808), (156, 137430), (162, 132340), (180, 119106), (195, 109944), (216, 99255), (234, 91620), (260, 82458), (270, 79404), (312, 68715), (324, 66170), (351, 61080), (360, 59553), (390, 54972), (405, 52936), (468, 45810), (509, 42120), (520, 41229), (540, 39702), (585, 36648), (648, 33085), (702, 30540), (780, 27486), (810, 26468), (936, 22905), (1018, 21060), (1053, 20360), (1080, 19851), (1170, 18324), (1404, 15270), (1527, 14040), (1560, 13743), (1620, 13234), (1755, 12216), (2036, 10530), (2106, 10180), (2340, 9162), (2545, 8424), (2808, 7635), (3054, 7020), (3240, 6617), (3510, 6108), (4072, 5265), (4212, 5090), (4581, 4680)]