21661206

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{263}}^1$

素因数の和:365

約数の個数: 64

約数和(自身を含む): 52005888

約数和(自身を除く): 30344682

約数列:

[1, 2, 3, 6, 7, 14, 21, 37, 42, 53, 74, 106, 111, 159, 222, 259, 263, 318, 371, 518, 526, 742, 777, 789, 1113, 1554, 1578, 1841, 1961, 2226, 3682, 3922, 5523, 5883, 9731, 11046, 11766, 13727, 13939, 19462, 27454, 27878, 29193, 41181, 41817, 58386, 68117, 82362, 83634, 97573, 136234, 195146, 204351, 292719, 408702, 515743, 585438, 1031486, 1547229, 3094458, 3610201, 7220402, 10830603, 21661206]

約数ペア:

[(1, 21661206), (2, 10830603), (3, 7220402), (6, 3610201), (7, 3094458), (14, 1547229), (21, 1031486), (37, 585438), (42, 515743), (53, 408702), (74, 292719), (106, 204351), (111, 195146), (159, 136234), (222, 97573), (259, 83634), (263, 82362), (318, 68117), (371, 58386), (518, 41817), (526, 41181), (742, 29193), (777, 27878), (789, 27454), (1113, 19462), (1554, 13939), (1578, 13727), (1841, 11766), (1961, 11046), (2226, 9731), (3682, 5883), (3922, 5523)]