21154410

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:260

約数の個数: 96

約数和(自身を含む): 58968000

約数和(自身を除く): 37813590

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 19, 30, 38, 45, 57, 89, 90, 95, 114, 139, 171, 178, 190, 267, 278, 285, 342, 417, 445, 534, 570, 695, 801, 834, 855, 890, 1251, 1335, 1390, 1602, 1691, 1710, 2085, 2502, 2641, 2670, 3382, 4005, 4170, 5073, 5282, 6255, 7923, 8010, 8455, 10146, 12371, 12510, 13205, 15219, 15846, 16910, 23769, 24742, 25365, 26410, 30438, 37113, 39615, 47538, 50730, 61855, 74226, 76095, 79230, 111339, 118845, 123710, 152190, 185565, 222678, 235049, 237690, 371130, 470098, 556695, 705147, 1113390, 1175245, 1410294, 2115441, 2350490, 3525735, 4230882, 7051470, 10577205, 21154410]

約数ペア:

[(1, 21154410), (2, 10577205), (3, 7051470), (5, 4230882), (6, 3525735), (9, 2350490), (10, 2115441), (15, 1410294), (18, 1175245), (19, 1113390), (30, 705147), (38, 556695), (45, 470098), (57, 371130), (89, 237690), (90, 235049), (95, 222678), (114, 185565), (139, 152190), (171, 123710), (178, 118845), (190, 111339), (267, 79230), (278, 76095), (285, 74226), (342, 61855), (417, 50730), (445, 47538), (534, 39615), (570, 37113), (695, 30438), (801, 26410), (834, 25365), (855, 24742), (890, 23769), (1251, 16910), (1335, 15846), (1390, 15219), (1602, 13205), (1691, 12510), (1710, 12371), (2085, 10146), (2502, 8455), (2641, 8010), (2670, 7923), (3382, 6255), (4005, 5282), (4170, 5073)]