78802900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1009}}^1$

素因数の和:1105

約数の個数: 72

約数和(自身を含む): 189362880

約数和(自身を除く): 110559980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 71, 100, 110, 142, 220, 275, 284, 355, 550, 710, 781, 1009, 1100, 1420, 1562, 1775, 2018, 3124, 3550, 3905, 4036, 5045, 7100, 7810, 10090, 11099, 15620, 19525, 20180, 22198, 25225, 39050, 44396, 50450, 55495, 71639, 78100, 100900, 110990, 143278, 221980, 277475, 286556, 358195, 554950, 716390, 788029, 1109900, 1432780, 1576058, 1790975, 3152116, 3581950, 3940145, 7163900, 7880290, 15760580, 19700725, 39401450, 78802900]

約数ペア:

[(1, 78802900), (2, 39401450), (4, 19700725), (5, 15760580), (10, 7880290), (11, 7163900), (20, 3940145), (22, 3581950), (25, 3152116), (44, 1790975), (50, 1576058), (55, 1432780), (71, 1109900), (100, 788029), (110, 716390), (142, 554950), (220, 358195), (275, 286556), (284, 277475), (355, 221980), (550, 143278), (710, 110990), (781, 100900), (1009, 78100), (1100, 71639), (1420, 55495), (1562, 50450), (1775, 44396), (2018, 39050), (3124, 25225), (3550, 22198), (3905, 20180), (4036, 19525), (5045, 15620), (7100, 11099), (7810, 10090)]