21242970

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{4817}}^1$

素因数の和:4844

約数の個数: 72

約数和(自身を含む): 64262484

約数和(自身を除く): 43019514

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 49, 63, 70, 90, 98, 105, 126, 147, 210, 245, 294, 315, 441, 490, 630, 735, 882, 1470, 2205, 4410, 4817, 9634, 14451, 24085, 28902, 33719, 43353, 48170, 67438, 72255, 86706, 101157, 144510, 168595, 202314, 216765, 236033, 303471, 337190, 433530, 472066, 505785, 606942, 708099, 1011570, 1180165, 1416198, 1517355, 2124297, 2360330, 3034710, 3540495, 4248594, 7080990, 10621485, 21242970]

約数ペア:

[(1, 21242970), (2, 10621485), (3, 7080990), (5, 4248594), (6, 3540495), (7, 3034710), (9, 2360330), (10, 2124297), (14, 1517355), (15, 1416198), (18, 1180165), (21, 1011570), (30, 708099), (35, 606942), (42, 505785), (45, 472066), (49, 433530), (63, 337190), (70, 303471), (90, 236033), (98, 216765), (105, 202314), (126, 168595), (147, 144510), (210, 101157), (245, 86706), (294, 72255), (315, 67438), (441, 48170), (490, 43353), (630, 33719), (735, 28902), (882, 24085), (1470, 14451), (2205, 9634), (4410, 4817)]