251285320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{223}}^1$

素因数の和:455

約数の個数: 128

約数和(自身を含む): 670602240

約数和(自身を除く): 419316920

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 40, 44, 52, 55, 65, 88, 104, 110, 130, 143, 197, 220, 223, 260, 286, 394, 440, 446, 520, 572, 715, 788, 892, 985, 1115, 1144, 1430, 1576, 1784, 1970, 2167, 2230, 2453, 2561, 2860, 2899, 3940, 4334, 4460, 4906, 5122, 5720, 5798, 7880, 8668, 8920, 9812, 10244, 10835, 11596, 12265, 12805, 14495, 17336, 19624, 20488, 21670, 23192, 24530, 25610, 28171, 28990, 31889, 43340, 43931, 49060, 51220, 56342, 57980, 63778, 86680, 87862, 98120, 102440, 112684, 115960, 127556, 140855, 159445, 175724, 219655, 225368, 255112, 281710, 318890, 351448, 439310, 483241, 563420, 571103, 637780, 878620, 966482, 1126840, 1142206, 1275560, 1757240, 1932964, 2284412, 2416205, 2855515, 3865928, 4568824, 4832410, 5711030, 6282133, 9664820, 11422060, 12564266, 19329640, 22844120, 25128532, 31410665, 50257064, 62821330, 125642660, 251285320]

約数ペア:

[(1, 251285320), (2, 125642660), (4, 62821330), (5, 50257064), (8, 31410665), (10, 25128532), (11, 22844120), (13, 19329640), (20, 12564266), (22, 11422060), (26, 9664820), (40, 6282133), (44, 5711030), (52, 4832410), (55, 4568824), (65, 3865928), (88, 2855515), (104, 2416205), (110, 2284412), (130, 1932964), (143, 1757240), (197, 1275560), (220, 1142206), (223, 1126840), (260, 966482), (286, 878620), (394, 637780), (440, 571103), (446, 563420), (520, 483241), (572, 439310), (715, 351448), (788, 318890), (892, 281710), (985, 255112), (1115, 225368), (1144, 219655), (1430, 175724), (1576, 159445), (1784, 140855), (1970, 127556), (2167, 115960), (2230, 112684), (2453, 102440), (2561, 98120), (2860, 87862), (2899, 86680), (3940, 63778), (4334, 57980), (4460, 56342), (4906, 51220), (5122, 49060), (5720, 43931), (5798, 43340), (7880, 31889), (8668, 28990), (8920, 28171), (9812, 25610), (10244, 24530), (10835, 23192), (11596, 21670), (12265, 20488), (12805, 19624), (14495, 17336)]