21552405

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:159

約数の個数: 64

約数和(自身を含む): 41472000

約数和(自身を除く): 19919595

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 59, 71, 105, 147, 177, 213, 245, 295, 343, 355, 413, 497, 735, 885, 1029, 1065, 1239, 1491, 1715, 2065, 2485, 2891, 3479, 4189, 5145, 6195, 7455, 8673, 10437, 12567, 14455, 17395, 20237, 20945, 24353, 29323, 43365, 52185, 60711, 62835, 73059, 87969, 101185, 121765, 146615, 205261, 303555, 365295, 439845, 615783, 1026305, 1436827, 3078915, 4310481, 7184135, 21552405]

約数ペア:

[(1, 21552405), (3, 7184135), (5, 4310481), (7, 3078915), (15, 1436827), (21, 1026305), (35, 615783), (49, 439845), (59, 365295), (71, 303555), (105, 205261), (147, 146615), (177, 121765), (213, 101185), (245, 87969), (295, 73059), (343, 62835), (355, 60711), (413, 52185), (497, 43365), (735, 29323), (885, 24353), (1029, 20945), (1065, 20237), (1239, 17395), (1491, 14455), (1715, 12567), (2065, 10437), (2485, 8673), (2891, 7455), (3479, 6195), (4189, 5145)]