21507948

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{7759}}^1$

素因数の和:7787

約数の個数: 72

約数和(自身を含む): 67791360

約数和(自身を除く): 46283412

約数列:

[1, 2, 3, 4, 6, 7, 9, 11, 12, 14, 18, 21, 22, 28, 33, 36, 42, 44, 63, 66, 77, 84, 99, 126, 132, 154, 198, 231, 252, 308, 396, 462, 693, 924, 1386, 2772, 7759, 15518, 23277, 31036, 46554, 54313, 69831, 85349, 93108, 108626, 139662, 162939, 170698, 217252, 256047, 279324, 325878, 341396, 488817, 512094, 597443, 651756, 768141, 977634, 1024188, 1194886, 1536282, 1792329, 1955268, 2389772, 3072564, 3584658, 5376987, 7169316, 10753974, 21507948]

約数ペア:

[(1, 21507948), (2, 10753974), (3, 7169316), (4, 5376987), (6, 3584658), (7, 3072564), (9, 2389772), (11, 1955268), (12, 1792329), (14, 1536282), (18, 1194886), (21, 1024188), (22, 977634), (28, 768141), (33, 651756), (36, 597443), (42, 512094), (44, 488817), (63, 341396), (66, 325878), (77, 279324), (84, 256047), (99, 217252), (126, 170698), (132, 162939), (154, 139662), (198, 108626), (231, 93108), (252, 85349), (308, 69831), (396, 54313), (462, 46554), (693, 31036), (924, 23277), (1386, 15518), (2772, 7759)]