28787375

素因数分解:

$5^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1$

素因数の和:105

約数の個数: 64

約数和(自身を含む): 43130880

約数和(自身を除く): 14343505

約数列:

[1, 5, 17, 19, 23, 25, 31, 85, 95, 115, 125, 155, 323, 391, 425, 437, 475, 527, 575, 589, 713, 775, 1615, 1955, 2125, 2185, 2375, 2635, 2875, 2945, 3565, 3875, 7429, 8075, 9775, 10013, 10925, 12121, 13175, 13547, 14725, 17825, 37145, 40375, 48875, 50065, 54625, 60605, 65875, 67735, 73625, 89125, 185725, 230299, 250325, 303025, 338675, 928625, 1151495, 1251625, 1515125, 1693375, 5757475, 28787375]

約数ペア:

[(1, 28787375), (5, 5757475), (17, 1693375), (19, 1515125), (23, 1251625), (25, 1151495), (31, 928625), (85, 338675), (95, 303025), (115, 250325), (125, 230299), (155, 185725), (323, 89125), (391, 73625), (425, 67735), (437, 65875), (475, 60605), (527, 54625), (575, 50065), (589, 48875), (713, 40375), (775, 37145), (1615, 17825), (1955, 14725), (2125, 13547), (2185, 13175), (2375, 12121), (2635, 10925), (2875, 10013), (2945, 9775), (3565, 8075), (3875, 7429)]