21571410

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{739}}^1$

素因数の和:895

約数の個数: 64

約数和(自身を含む): 59673600

約数和(自身を除く): 38102190

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 139, 210, 278, 417, 695, 739, 834, 973, 1390, 1478, 1946, 2085, 2217, 2919, 3695, 4170, 4434, 4865, 5173, 5838, 7390, 9730, 10346, 11085, 14595, 15519, 22170, 25865, 29190, 31038, 51730, 77595, 102721, 155190, 205442, 308163, 513605, 616326, 719047, 1027210, 1438094, 1540815, 2157141, 3081630, 3595235, 4314282, 7190470, 10785705, 21571410]

約数ペア:

[(1, 21571410), (2, 10785705), (3, 7190470), (5, 4314282), (6, 3595235), (7, 3081630), (10, 2157141), (14, 1540815), (15, 1438094), (21, 1027210), (30, 719047), (35, 616326), (42, 513605), (70, 308163), (105, 205442), (139, 155190), (210, 102721), (278, 77595), (417, 51730), (695, 31038), (739, 29190), (834, 25865), (973, 22170), (1390, 15519), (1478, 14595), (1946, 11085), (2085, 10346), (2217, 9730), (2919, 7390), (3695, 5838), (4170, 5173), (4434, 4865)]