20148789875

素因数分解:

$5^3\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{193}}^1\times {\mathrm{389}}^1$

素因数の和:729

約数の個数: 64

約数和(自身を含む): 26910748800

約数和(自身を除く): 6761958925

約数列:

[1, 5, 19, 25, 95, 113, 125, 193, 389, 475, 565, 965, 1945, 2147, 2375, 2825, 3667, 4825, 7391, 9725, 10735, 14125, 18335, 21809, 24125, 36955, 43957, 48625, 53675, 75077, 91675, 109045, 184775, 219785, 268375, 375385, 414371, 458375, 545225, 835183, 923875, 1098925, 1426463, 1876925, 2071855, 2726125, 4175915, 5494625, 7132315, 8483701, 9384625, 10359275, 20879575, 35661575, 42418505, 51796375, 104397875, 161190319, 178307875, 212092525, 805951595, 1060462625, 4029757975, 20148789875]

約数ペア:

[(1, 20148789875), (5, 4029757975), (19, 1060462625), (25, 805951595), (95, 212092525), (113, 178307875), (125, 161190319), (193, 104397875), (389, 51796375), (475, 42418505), (565, 35661575), (965, 20879575), (1945, 10359275), (2147, 9384625), (2375, 8483701), (2825, 7132315), (3667, 5494625), (4825, 4175915), (7391, 2726125), (9725, 2071855), (10735, 1876925), (14125, 1426463), (18335, 1098925), (21809, 923875), (24125, 835183), (36955, 545225), (43957, 458375), (48625, 414371), (53675, 375385), (75077, 268375), (91675, 219785), (109045, 184775)]