28239700

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{167}}^1$

素因数の和:289

約数の個数: 72

約数和(自身を含む): 65620800

約数和(自身を除く): 37381100

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 89, 95, 100, 167, 178, 190, 334, 356, 380, 445, 475, 668, 835, 890, 950, 1670, 1691, 1780, 1900, 2225, 3173, 3340, 3382, 4175, 4450, 6346, 6764, 8350, 8455, 8900, 12692, 14863, 15865, 16700, 16910, 29726, 31730, 33820, 42275, 59452, 63460, 74315, 79325, 84550, 148630, 158650, 169100, 282397, 297260, 317300, 371575, 564794, 743150, 1129588, 1411985, 1486300, 2823970, 5647940, 7059925, 14119850, 28239700]

約数ペア:

[(1, 28239700), (2, 14119850), (4, 7059925), (5, 5647940), (10, 2823970), (19, 1486300), (20, 1411985), (25, 1129588), (38, 743150), (50, 564794), (76, 371575), (89, 317300), (95, 297260), (100, 282397), (167, 169100), (178, 158650), (190, 148630), (334, 84550), (356, 79325), (380, 74315), (445, 63460), (475, 59452), (668, 42275), (835, 33820), (890, 31730), (950, 29726), (1670, 16910), (1691, 16700), (1780, 15865), (1900, 14863), (2225, 12692), (3173, 8900), (3340, 8455), (3382, 8350), (4175, 6764), (4450, 6346)]