81720064

素因数分解:

$2^8\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{317}}^1$

素因数の和:405

約数の個数: 72

約数和(自身を含む): 175497840

約数和(自身を除く): 93777776

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 53, 64, 76, 106, 128, 152, 212, 256, 304, 317, 424, 608, 634, 848, 1007, 1216, 1268, 1696, 2014, 2432, 2536, 3392, 4028, 4864, 5072, 6023, 6784, 8056, 10144, 12046, 13568, 16112, 16801, 20288, 24092, 32224, 33602, 40576, 48184, 64448, 67204, 81152, 96368, 128896, 134408, 192736, 257792, 268816, 319219, 385472, 537632, 638438, 770944, 1075264, 1276876, 1541888, 2150528, 2553752, 4301056, 5107504, 10215008, 20430016, 40860032, 81720064]

約数ペア:

[(1, 81720064), (2, 40860032), (4, 20430016), (8, 10215008), (16, 5107504), (19, 4301056), (32, 2553752), (38, 2150528), (53, 1541888), (64, 1276876), (76, 1075264), (106, 770944), (128, 638438), (152, 537632), (212, 385472), (256, 319219), (304, 268816), (317, 257792), (424, 192736), (608, 134408), (634, 128896), (848, 96368), (1007, 81152), (1216, 67204), (1268, 64448), (1696, 48184), (2014, 40576), (2432, 33602), (2536, 32224), (3392, 24092), (4028, 20288), (4864, 16801), (5072, 16112), (6023, 13568), (6784, 12046), (8056, 10144)]