256241505

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1$

素因数の和:191

約数の個数: 128

約数和(自身を含む): 505774080

約数和(自身を除く): 249532575

約数列:

[1, 3, 5, 13, 15, 19, 23, 31, 39, 57, 65, 69, 93, 95, 97, 115, 155, 195, 247, 285, 291, 299, 345, 403, 437, 465, 485, 589, 713, 741, 897, 1209, 1235, 1261, 1311, 1455, 1495, 1767, 1843, 2015, 2139, 2185, 2231, 2945, 3007, 3565, 3705, 3783, 4485, 5529, 5681, 6045, 6305, 6555, 6693, 7657, 8835, 9021, 9215, 9269, 10695, 11155, 13547, 15035, 17043, 18915, 22971, 23959, 27645, 27807, 28405, 29003, 33465, 38285, 39091, 40641, 42389, 45105, 46345, 57133, 67735, 69161, 71877, 85215, 87009, 114855, 117273, 119795, 127167, 139035, 145015, 171399, 176111, 195455, 203205, 207483, 211945, 285665, 345805, 359385, 435045, 528333, 551057, 586365, 635835, 742729, 856995, 880555, 899093, 1037415, 1314059, 1653171, 2228187, 2641665, 2697279, 2755285, 3713645, 3942177, 4495465, 6570295, 8265855, 11140935, 13486395, 17082767, 19710885, 51248301, 85413835, 256241505]

約数ペア:

[(1, 256241505), (3, 85413835), (5, 51248301), (13, 19710885), (15, 17082767), (19, 13486395), (23, 11140935), (31, 8265855), (39, 6570295), (57, 4495465), (65, 3942177), (69, 3713645), (93, 2755285), (95, 2697279), (97, 2641665), (115, 2228187), (155, 1653171), (195, 1314059), (247, 1037415), (285, 899093), (291, 880555), (299, 856995), (345, 742729), (403, 635835), (437, 586365), (465, 551057), (485, 528333), (589, 435045), (713, 359385), (741, 345805), (897, 285665), (1209, 211945), (1235, 207483), (1261, 203205), (1311, 195455), (1455, 176111), (1495, 171399), (1767, 145015), (1843, 139035), (2015, 127167), (2139, 119795), (2185, 117273), (2231, 114855), (2945, 87009), (3007, 85215), (3565, 71877), (3705, 69161), (3783, 67735), (4485, 57133), (5529, 46345), (5681, 45105), (6045, 42389), (6305, 40641), (6555, 39091), (6693, 38285), (7657, 33465), (8835, 29003), (9021, 28405), (9215, 27807), (9269, 27645), (10695, 23959), (11155, 22971), (13547, 18915), (15035, 17043)]