21754240

素因数分解:

$2^7\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1789}}^1$

素因数の和:1827

約数の個数: 64

約数和(自身を含む): 54774000

約数和(自身を除く): 33019760

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 128, 152, 160, 190, 304, 320, 380, 608, 640, 760, 1216, 1520, 1789, 2432, 3040, 3578, 6080, 7156, 8945, 12160, 14312, 17890, 28624, 33991, 35780, 57248, 67982, 71560, 114496, 135964, 143120, 169955, 228992, 271928, 286240, 339910, 543856, 572480, 679820, 1087712, 1144960, 1359640, 2175424, 2719280, 4350848, 5438560, 10877120, 21754240]

約数ペア:

[(1, 21754240), (2, 10877120), (4, 5438560), (5, 4350848), (8, 2719280), (10, 2175424), (16, 1359640), (19, 1144960), (20, 1087712), (32, 679820), (38, 572480), (40, 543856), (64, 339910), (76, 286240), (80, 271928), (95, 228992), (128, 169955), (152, 143120), (160, 135964), (190, 114496), (304, 71560), (320, 67982), (380, 57248), (608, 35780), (640, 33991), (760, 28624), (1216, 17890), (1520, 14312), (1789, 12160), (2432, 8945), (3040, 7156), (3578, 6080)]