81321968

素因数分解:

$2^4\times 7^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1$

素因数の和:215

約数の個数: 120

約数和(自身を含む): 201862080

約数和(自身を除く): 120540112

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 49, 52, 56, 79, 91, 98, 101, 104, 112, 158, 182, 196, 202, 208, 316, 364, 392, 404, 553, 632, 637, 707, 728, 784, 808, 1027, 1106, 1264, 1274, 1313, 1414, 1456, 1616, 2054, 2212, 2548, 2626, 2828, 3871, 4108, 4424, 4949, 5096, 5252, 5656, 7189, 7742, 7979, 8216, 8848, 9191, 9898, 10192, 10504, 11312, 14378, 15484, 15958, 16432, 18382, 19796, 21008, 28756, 30968, 31916, 36764, 39592, 50323, 55853, 57512, 61936, 63832, 64337, 73528, 79184, 100646, 103727, 111706, 115024, 127664, 128674, 147056, 201292, 207454, 223412, 257348, 390971, 402584, 414908, 446824, 514696, 726089, 781942, 805168, 829816, 893648, 1029392, 1452178, 1563884, 1659632, 2904356, 3127768, 5082623, 5808712, 6255536, 10165246, 11617424, 20330492, 40660984, 81321968]

約数ペア:

[(1, 81321968), (2, 40660984), (4, 20330492), (7, 11617424), (8, 10165246), (13, 6255536), (14, 5808712), (16, 5082623), (26, 3127768), (28, 2904356), (49, 1659632), (52, 1563884), (56, 1452178), (79, 1029392), (91, 893648), (98, 829816), (101, 805168), (104, 781942), (112, 726089), (158, 514696), (182, 446824), (196, 414908), (202, 402584), (208, 390971), (316, 257348), (364, 223412), (392, 207454), (404, 201292), (553, 147056), (632, 128674), (637, 127664), (707, 115024), (728, 111706), (784, 103727), (808, 100646), (1027, 79184), (1106, 73528), (1264, 64337), (1274, 63832), (1313, 61936), (1414, 57512), (1456, 55853), (1616, 50323), (2054, 39592), (2212, 36764), (2548, 31916), (2626, 30968), (2828, 28756), (3871, 21008), (4108, 19796), (4424, 18382), (4949, 16432), (5096, 15958), (5252, 15484), (5656, 14378), (7189, 11312), (7742, 10504), (7979, 10192), (8216, 9898), (8848, 9191)]