255721000

素因数分解:

$2^3\times 5^3\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{313}}^1$

素因数の和:396

約数の個数: 128

約数和(自身を含む): 646588800

約数和(自身を除く): 390867800

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 43, 50, 76, 86, 95, 100, 125, 152, 172, 190, 200, 215, 250, 313, 344, 380, 430, 475, 500, 626, 760, 817, 860, 950, 1000, 1075, 1252, 1565, 1634, 1720, 1900, 2150, 2375, 2504, 3130, 3268, 3800, 4085, 4300, 4750, 5375, 5947, 6260, 6536, 7825, 8170, 8600, 9500, 10750, 11894, 12520, 13459, 15650, 16340, 19000, 20425, 21500, 23788, 26918, 29735, 31300, 32680, 39125, 40850, 43000, 47576, 53836, 59470, 62600, 67295, 78250, 81700, 102125, 107672, 118940, 134590, 148675, 156500, 163400, 204250, 237880, 255721, 269180, 297350, 313000, 336475, 408500, 511442, 538360, 594700, 672950, 743375, 817000, 1022884, 1189400, 1278605, 1345900, 1486750, 1682375, 2045768, 2557210, 2691800, 2973500, 3364750, 5114420, 5947000, 6393025, 6729500, 10228840, 12786050, 13459000, 25572100, 31965125, 51144200, 63930250, 127860500, 255721000]

約数ペア:

[(1, 255721000), (2, 127860500), (4, 63930250), (5, 51144200), (8, 31965125), (10, 25572100), (19, 13459000), (20, 12786050), (25, 10228840), (38, 6729500), (40, 6393025), (43, 5947000), (50, 5114420), (76, 3364750), (86, 2973500), (95, 2691800), (100, 2557210), (125, 2045768), (152, 1682375), (172, 1486750), (190, 1345900), (200, 1278605), (215, 1189400), (250, 1022884), (313, 817000), (344, 743375), (380, 672950), (430, 594700), (475, 538360), (500, 511442), (626, 408500), (760, 336475), (817, 313000), (860, 297350), (950, 269180), (1000, 255721), (1075, 237880), (1252, 204250), (1565, 163400), (1634, 156500), (1720, 148675), (1900, 134590), (2150, 118940), (2375, 107672), (2504, 102125), (3130, 81700), (3268, 78250), (3800, 67295), (4085, 62600), (4300, 59470), (4750, 53836), (5375, 47576), (5947, 43000), (6260, 40850), (6536, 39125), (7825, 32680), (8170, 31300), (8600, 29735), (9500, 26918), (10750, 23788), (11894, 21500), (12520, 20425), (13459, 19000), (15650, 16340)]