668836875

素因数分解:

$3^1\times 5^4\times 7^1\times {\mathrm{131}}^1\times {\mathrm{389}}^1$

素因数の和:550

約数の個数: 80

約数和(自身を含む): 1286588160

約数和(自身を除く): 617751285

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 125, 131, 175, 375, 389, 393, 525, 625, 655, 875, 917, 1167, 1875, 1945, 1965, 2625, 2723, 2751, 3275, 4375, 4585, 5835, 8169, 9725, 9825, 13125, 13615, 13755, 16375, 22925, 29175, 40845, 48625, 49125, 50959, 68075, 68775, 81875, 114625, 145875, 152877, 204225, 243125, 245625, 254795, 340375, 343875, 356713, 573125, 729375, 764385, 1021125, 1070139, 1273975, 1701875, 1719375, 1783565, 3821925, 5105625, 5350695, 6369875, 8917825, 19109625, 26753475, 31849375, 44589125, 95548125, 133767375, 222945625, 668836875]

約数ペア:

[(1, 668836875), (3, 222945625), (5, 133767375), (7, 95548125), (15, 44589125), (21, 31849375), (25, 26753475), (35, 19109625), (75, 8917825), (105, 6369875), (125, 5350695), (131, 5105625), (175, 3821925), (375, 1783565), (389, 1719375), (393, 1701875), (525, 1273975), (625, 1070139), (655, 1021125), (875, 764385), (917, 729375), (1167, 573125), (1875, 356713), (1945, 343875), (1965, 340375), (2625, 254795), (2723, 245625), (2751, 243125), (3275, 204225), (4375, 152877), (4585, 145875), (5835, 114625), (8169, 81875), (9725, 68775), (9825, 68075), (13125, 50959), (13615, 49125), (13755, 48625), (16375, 40845), (22925, 29175)]