21154450

素因数分解:

$2^1\times 5^2\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1$

素因数の和:243

約数の個数: 48

約数和(自身を含む): 40979520

約数和(自身を除く): 19825070

約数列:

[1, 2, 5, 10, 25, 50, 59, 71, 101, 118, 142, 202, 295, 355, 505, 590, 710, 1010, 1475, 1775, 2525, 2950, 3550, 4189, 5050, 5959, 7171, 8378, 11918, 14342, 20945, 29795, 35855, 41890, 59590, 71710, 104725, 148975, 179275, 209450, 297950, 358550, 423089, 846178, 2115445, 4230890, 10577225, 21154450]

約数ペア:

[(1, 21154450), (2, 10577225), (5, 4230890), (10, 2115445), (25, 846178), (50, 423089), (59, 358550), (71, 297950), (101, 209450), (118, 179275), (142, 148975), (202, 104725), (295, 71710), (355, 59590), (505, 41890), (590, 35855), (710, 29795), (1010, 20945), (1475, 14342), (1775, 11918), (2525, 8378), (2950, 7171), (3550, 5959), (4189, 5050)]