28430875

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:109

約数の個数: 64

約数和(自身を含む): 43130880

約数和(自身を除く): 14700005

約数列:

[1, 5, 11, 23, 25, 29, 31, 55, 115, 125, 145, 155, 253, 275, 319, 341, 575, 667, 713, 725, 775, 899, 1265, 1375, 1595, 1705, 2875, 3335, 3565, 3625, 3875, 4495, 6325, 7337, 7843, 7975, 8525, 9889, 16675, 17825, 20677, 22475, 31625, 36685, 39215, 39875, 42625, 49445, 83375, 89125, 103385, 112375, 183425, 196075, 227447, 247225, 516925, 917125, 980375, 1137235, 1236125, 2584625, 5686175, 28430875]

約数ペア:

[(1, 28430875), (5, 5686175), (11, 2584625), (23, 1236125), (25, 1137235), (29, 980375), (31, 917125), (55, 516925), (115, 247225), (125, 227447), (145, 196075), (155, 183425), (253, 112375), (275, 103385), (319, 89125), (341, 83375), (575, 49445), (667, 42625), (713, 39875), (725, 39215), (775, 36685), (899, 31625), (1265, 22475), (1375, 20677), (1595, 17825), (1705, 16675), (2875, 9889), (3335, 8525), (3565, 7975), (3625, 7843), (3875, 7337), (4495, 6325)]