128778825

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{307}}^1$

素因数の和:391

約数の個数: 96

約数和(自身を含む): 263983104

約数和(自身を除く): 135204279

約数列:

[1, 3, 5, 7, 15, 17, 21, 25, 35, 47, 51, 75, 85, 105, 119, 141, 175, 235, 255, 307, 329, 357, 425, 525, 595, 705, 799, 921, 987, 1175, 1275, 1535, 1645, 1785, 2149, 2397, 2975, 3525, 3995, 4605, 4935, 5219, 5593, 6447, 7675, 8225, 8925, 10745, 11985, 14429, 15657, 16779, 19975, 23025, 24675, 26095, 27965, 32235, 36533, 43287, 53725, 59925, 72145, 78285, 83895, 101003, 109599, 130475, 139825, 161175, 182665, 216435, 245293, 303009, 360725, 391425, 419475, 505015, 547995, 735879, 913325, 1082175, 1226465, 1515045, 1717051, 2525075, 2739975, 3679395, 5151153, 6132325, 7575225, 8585255, 18396975, 25755765, 42926275, 128778825]

約数ペア:

[(1, 128778825), (3, 42926275), (5, 25755765), (7, 18396975), (15, 8585255), (17, 7575225), (21, 6132325), (25, 5151153), (35, 3679395), (47, 2739975), (51, 2525075), (75, 1717051), (85, 1515045), (105, 1226465), (119, 1082175), (141, 913325), (175, 735879), (235, 547995), (255, 505015), (307, 419475), (329, 391425), (357, 360725), (425, 303009), (525, 245293), (595, 216435), (705, 182665), (799, 161175), (921, 139825), (987, 130475), (1175, 109599), (1275, 101003), (1535, 83895), (1645, 78285), (1785, 72145), (2149, 59925), (2397, 53725), (2975, 43287), (3525, 36533), (3995, 32235), (4605, 27965), (4935, 26095), (5219, 24675), (5593, 23025), (6447, 19975), (7675, 16779), (8225, 15657), (8925, 14429), (10745, 11985)]